Ornamental shrubs of the United States (hardy, cultivated) - Apgar, A. C. (Austin Craig), 1838 -1908 (American Book Company, 1910)

Ornithologiske bemaerkninger til Norges fauna ... (Indberetning til det Academiske collegium ved det Kongelige Frederiks universitet - Collett, Robert, 1842 -1913 (J. Dahl, 1871)

Österreichs Holzpflanzen = : Plantae lignosae Imperii Austriaci : eine auf genaue Berücksichtigung der merkmale der Laubblätter gegründete floristische Bearbeitung aller im Österreichischen Kaiserstaate wild wachsenden oder häufig cultivirten Bäume, Sträucher und Halbsträucher - Pokorny, Alois, 1826 -1886 (K.K. Hof- und Staatsdruckerei, 1864)

Østgrønlands vegetationsforhold - Hartz, N. (Nikolaj), 1867 -1937 (B. Lunos Kgl. Hof-bogtr, 1895)

O.S.U. naturalist - Ohio State University. Biological Club. (Biological Club of Ohio State University, 1901)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1889)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1895)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1898)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1899)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1912)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1914)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1913)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1915)

Our 50th anniversary - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Corliss Bros. Incorporated, 1955)

Our national parks - Muir, John, 1838 -1914 (Houghton, Mifflin and Company, 1901)

Our northern autumn, a study of its characteristic flowers, its brilliant foliage and its conspicuous fruits - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (Scribner, 1920)

Our northern shrubs and how to identify them : a handbook for the nature-lover - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (Charles Scribner's Sons, 1922)

Our northern shrubs and how to identify them; a handbook for the nature-lover - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (C. Scribner, 1903)

Our northern shrubs and how to identify them; a handbook for the nature-lover - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (Scribner, 1903)

Our northern shrubs and how to identify them; a handbook for the nature-lover - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (C. Scribner, 1912)

Our nursery service, fall of 1947–spring of 1948 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (California Wild Flower Nursery, 1947)

Our woodlands, heaths, and hedges a popular description of trees, shrubs, wild fruits, etc., with notices of their insect inhabitants - Coleman, W. S. (William Stephen), 1829 -1904 (Routledge, Warnes, & Routledge, 1859)

Our woodlands, heaths, and hedges : a popular description of trees, shrubs, wild fruits, etc. : with notices of their insect inhabitants - Coleman, W. S. (William Stephen), 1829 -1904 (George Routledge and Sons, 1866)

An outline of plant geography (The Macmillan company, 1926)

Outlines of botany for the high school laboratory and classroom (based on Gray's Lessons in botany) - Leavitt, Robert Greenleaf, 1865 - (American Book Co, 1901)

Outlines of medical botany :comprising vegetable anatomy and physiology...and a glossary of terms - Reid, Hugo. (Maclachlan, Stewart & Co, 1896)

Oversigt over det Kongelige Danske videnskabernes selskabs forhandlinger = Bulletin de l'Académie royale des sciences et des lettres de Danemark - Kongelige Danske videnskabernes selskab. (A.F. Høst, 1842)

Pacific Northwest ecoclass codes for plant associations - Hall, Frederick C. (USDA, Forest Service, Pacific Northwest Region, 1988)

Une page d'histoire de la medecine : la thérapeutique sous les premiers Césars - Lépine, R. (Raphael), 1840 -1919 (F. Alcan, 1890)

Die palaeobotanische Literatur : bibliographische Übersicht über die Arbeiten aus dem Gebiete der Palaeobotanik - Jongmans, W. (Willem), 1878 -1957 (Fischer, 1913)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1881)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1883)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1884)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1885)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1888)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1889)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1890)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1891)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1895)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1896)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1900)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1904)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1916)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1918)

Pamphlets on forestry. History (1900)

Pamphlets on forestry in Nebraska (1900)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1930)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1931)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1933)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1934)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1936)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1939)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1940)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1941)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1942)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1943)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1945)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1947)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1952)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1954)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1957)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1966)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1967)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1969)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1971)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1972)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1975)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1976)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1986)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1989)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1993)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1998)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 2000)

Papers presented at the Celebration of the Twentieth Anniversary of the New York Botanical Garden, September 6-9, 1915. Published by the aid of the David Lydig Fund, bequethed by Charles P. Daly - New York Botanical Garden (1916)

Parasites : a treatise on the entozoa of man and animals, including some account of the ectozoa - Cobbold, T. Spencer (Thomas Spencer), 1828 -1886 (J. & A. Churchill, 1879)

Parasites a treatise on the entozoa of man and animals including some account of the ectozoa - Cobbold, T. Spencer (Thomas Spencer), 1828 -1886 (J. & A. Churchill, 1879)

Parasites : a treatise on the entozoa of man and animals including some account of the ectozoa - Cobbold, T. Spencer (Thomas Spencer), 1828 -1886 (J. & A. Churchill, 1879)

Park and cemetery - Haight, R. J. (Rufus J.) (R.J. Haight, 1898)

Park and cemetery and landscape gardening - Haight, R. J. (Rufus J.) (R.J. Haight, 1903)

Park's floral guide - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park, 1909)

Parks and pleasure grounds, or, Practical notes on country residences, villas, public parks, and gardens - Smith, Charles H. J. (Reeve and Co, 1852)

Patterson's numbered check-list of North American plants north of Mexico - Patterson, Harry N. (Harry Norton), 1853 -1919 (Patterson, 1892)

Paxton's Botanical dictionary; comprising the names, history, and culture of all plants known in Britain; with a full explanation of technical terms. New ed. including all the new plants up to the present year - Paxton, Joseph, Sir, 1803 -1865 (Bradbury, Evans, & co, 1868)

Paxton's flower garden - Lindley, John, 1799 -1865 (Cassell, Petter, Galpin & Co, 1883)

Paxton's flower garden - Lindley, John, 1799 -1865 (1853)

Paxton's magazine of botany, and register of flowering plants - Paxton, Joseph, Sir, 1803 -1865 (Orr and Smith [etc.], 1836)

Paxton's magazine of botany, and register of flowering plants - Paxton, Joseph, Sir, 1803 -1865 (Orr and Smith [etc.], 1841)

Paxton's magazine of botany, and register of flowering plants - Paxton, Joseph, Sir, 1803 -1865 (Orr and Smith [etc.], 1842)

Paxton's magazine of botany, and register of flowering plants - Paxton, Joseph, Sir, 1803 -1865 (Orr and Smith [etc.], 1846)

Payne's garden guide : seeds, plants and trees, 1931 : an informative catalog of flower, vegetable, tree and shrub seeds, roses and flowering plants, vines, ornamental and fruiting shrubs and trees, including an extensive listing of California native trees, shrubs and wild flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Theodore Payne, 1931)

Payne's garden guide : seeds, plants and trees, 1932 : an informative catalog of flower, vegetable, tree and shrub seeds, roses and flowering plants, vines, ornamental and fruiting shrubs and trees, including an extensive listing of California native trees, shrubs and wild flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Theodore Payne, 1932)

Perennial list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Cascio Nursery, 1958)

Perennial plants from all over the world, rock plants and floral novelties : fall 1930, spring 1931 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Purdy, 1930)

Perennial plants from all over the world, rock plants and floral novelties : fall, 1931 spring, 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Purdy, 1931)

Perennial plants from all over the world, rock plants and floral novelties : fall 1932 spring 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Purdy, 1932)

Perennial plants from all over the world, rock plants and floral novelties : fall 1929, spring 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Purdy, 1929)

Perennial plants from all over the world, rock plants and floral novelties : fall 1924-spring 1925 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Purdy, 1924)

Perennials : deciduous trees, flowering shrubs, evergreens, hardy vines, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Muller-Sealey Co., Inc, 1924)

Perennials, flowering shrubs, rock plants, evergreens : 1926 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gray & Cole, 1926)

Perennials for all purposes : ground covers and hardy vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Muller-Sealey Co., Inc, 1920)

Perennials, rock plants, flowering shrubs, evergreens : 1927 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gray & Cole, 1927)

Perennials, rock plants, flowering shrubs, evergreens : 1928 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gray & Cole, 1928)

Perennials, rock plants, flowering shrubs, evergreens, 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gray & Cole, 1929)

Perennials, shrubs, trees, vines, ferns, espaliers, ground covers : wholesale list, 1944 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tuttle Bros. Nurseries, 1944)

Perennials, shrubs, trees, vines, ferns, espaliers, ground covers : wholesale price list, 1943 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tuttle Bros. Nurseries, 1943)

Perennials, shrubs, trees, vines, ferns, espaliers : retail and wholesale list, 1941-1942 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tuttle Bros. Nurseries, 1941)

Permanent sample plot (psp) field procedures manual - Alberta. Alberta Sustainable Resource Development. (Alberta Sustainable Resource Development, Public Lands and Forests Division, Forest Management Branch, 2005)

P.F. Cürie's Anleitung, die im mittleren und nördlichen Deutschland wildwachsenden und angebauten Pflanzen auf eine leichte und sichere Weise durch eigene Untersuchung zu bestimmen - Cürie, P. F. (C.G. Zobel, 1856)

Pflanzen-geographie auf physiologischer Grundlage - Schimper, A. F. W. (Andreas Franz Wilhelm), 1856 -1901 (Gustav Fischer, 1908)

Pflanzen-teratologie systematisch geordnet - Penzig, O. (Ottone), 1856 -1929 (A. Ciminago, 1894)

Die Pflanzen und Raupen Deutschlands : Versuch einer lepidopterologischen Botanik - Wilde, O. (E.S. Mittler, 1860)

Die Pflanzendecke Österreich-Ungarns. Auf Grund fremder und eigener Forschungen geschildert - Hayek, August von, 1871 -1928 (F. Deuticke, 1914)

Die Pflanzenfeinde aus der Klasse der Insekten. Ein nach Pflanzenfamilien geordnetes Handbuch sämmtlicher auf den einheimischen Pflanzen bisher beobachteten Insekten zum Gebrauch für Entomologen, Insektensammler, Botaniker, Land- und Forstwirthe und Gartenfreunde - Kaltenbach, J. H. (Johann Heinrich), 1807 -1876 (J. Hoffmann, 1874)

Das Pflanzenleben der Schweiz - Christ, H. (Hermann), 1833 -1933 (F. Schulhess, 1882)

Pflanzenmikrochemie : ein Hilfsbuch beim mikrochemischen Studium pflanzlicher Objekte - Tunmann, Otto, 1867 -1919 (Gebrüder Borntraeger, 1913)

Die Pflanzennamen der deutschen Flora : mit den wichtigern Synonymen in alphabetischer Ordnung, etymologisch erklärt - Martin, Adolf. (H.W. Schmidt, 1851)

Pflanzenphysiologie als Theorie der Gärtnerei. Für Botaniker, Gärtner, Landwirte, Forstleute und Pflanzenfreunde - Molisch, Hans, 1856 -1937 (G. Fischer, 1922)

Das Pflanzenreich :regni vegetablilis conspectus - Engler, Adolf, 1844 -1930 (W. Engelmann, 1900)

Die Pflanzenstoffe, botanisch-systematisch bearbeitet ; chemische Bestandteile und Zusammensetzung der einzelnen Pflanzenarten, Rohstoffe und Produkte. Phanerogamen - Wehmer, C. (Carl), 1858 -1935 (G. Fischer, 1911)

Die Pflanzenstoffe in chemischer, physiologischer, pharmakologischer und toxikologischer Hinsicht : für Aerzte, Apotheker, Chemiker und Pharmakologen - Husemann, August, 1833 -1877 (Springer, 1882)