Northwest flora - Rigg, George B. (George Burton) (University bookstore, 1912)

Notes of a naturalist in South America - Ball, John, 1818 -1889 (Kegan Paul, 1887)

Notes of a naturalist in South America - Ball, John, 1818 -1889 (K. Paul, Trench & co, 1887)

Notes on the distribution and bibliography of North American bees of the families, Apidae, Meliponidae, Bombidae, Euglossidae, and Anthophoridae - Cockerell, Theodore D. A. (Theodore Dru Alison), 1866 -1948 (1920)

Notizblatt des Königl. Botanischen Gartens und Museums zu Berlin - Engler, Adolf, 1844 -1930 (In Commission bei Wilhelm Engelmann, 1902)

Nova acta Regiae Societatis Scientiarum Upsaliensis - Kungl. Vetenskaps-societeten i Uppsala. (Almqvist & Wiksells, 1905)

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Nuytsia: journal of the Western Australian Herbarium - Western Australia. Department of Agriculture (Department of Biodiversity, Conservation and Attractions, 1984)

Occasional papers - San Diego Society of Natural History. (San Diego Society of Natural History, 1937)

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Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 2010)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1862)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1875)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1892)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1907)

On the crustacea and echinodermata of the Pacific shores of North America - Stimpson, William, 1832 -1872 (Boston Society of Natural History, 1857)

The Ontario natural science bulletin - Wellington Field Naturalists' Club. (Wellington Field Naturalists' Club, 1906)

The Ornithologist and botanist ([J.E. Blain, 1892)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1909)

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Pacific science - University of Hawaii. (University Press of Hawaii, 1950)

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Pacific science - University of Hawaii. (University Press of Hawaii, 1967)

Pacific States Floral Congress. [Papers] - California State Floral Society. (Academy of sciences, 1901)

Die palaeobotanische Literatur : bibliographische Übersicht über die Arbeiten aus dem Gebiete der Palaeobotanik - Jongmans, W. (Willem), 1878 -1957 (Fischer, 1910)

Palaeontology - Palaeontological Association (Palaeontological Association, 1964)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1925)

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

Park and cemetery - Haight, R. J. (Rufus J.) (R.J. Haight, 1896)

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

Payne's garden guide, 1927 : seeds, plants and trees - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Theodore Payne, 1927)

Payne's garden guide [of] seeds, plants & trees : 1922 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Theodore Payne, 1922)

Payne's garden guide [of] seeds, plants and trees : 1919 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Theodore Payne, 1919)

Payne's garden guide : seeds, plants & trees - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Theodore Payne, 1921)

Payne's garden guide : seeds, plants & trees - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Theodore Payne, 1920)

Payne's garden guide : seeds, plants and trees : 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Theodore Payne, 1928)

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)

Pesticides documentation bulletin - National Agricultural Library (U.S.) (National Agricultural Library, U.S. Dept. of Agriculture, #c 1965-1969, 1965)

Die pflanzen-mischlinge : ein beitrag zur biologie der gewächse - Focke, Wilhelm Olbers, 1834 -1922 (Gebrüder Borntrager, 1881)

Die Pflanzenwelt Afrikas, insbesondere seiner tropischen Gebiete : Grundzge der Pflanzenverbreitung im Afrika und die Charakterpflanzen Afrikas - Engler, Adolf, 1844 -1930 (W. Engelman, 1910)

Die Pflanzenwelt der peruanischen Anden in ihren Grundzügen dargestellt - Weberbauer, A. (August), 1871 -1948 (W. Engelmann, 1911)

Phanerogamic flora of the divisions of Uitenhage and Port Elizabeth : with a sketch map - Schönland, S. 1860 - (Govt. Print. and Stationery Office, 1919)

Philippine fiber plants - Brown, William Henry, 1884 -1939 (Bureau of Printing, 1919)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1906)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1908)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1912)

Physis - Sociedad Argentina de Ciencias Naturales. (Asociación Argentina de Ciencias Naturales [etc.], 1915)

Physis - Sociedad Argentina de Ciencias Naturales. (Asociación Argentina de Ciencias Naturales [etc.], 1918)

A phytogeographic and taxonomic study of the southern California trees and shrubs - Abrams, Le Roy, 1874 -1956 (1910)

Phytogeographic survey of North America. A consideration of the phytogeography of the North American continent, including Mexico, Central America and the West Indies, together with the evolution of North American plant distribution - Harshberger, John W. (John William), 1869 -1929 (W. Engelmann, 1911)

Phytogeography of Nebraska. 1. General survey by Roscoe Pound and Frederic E. Clements - Clements, Frederic E. (Frederic Edward), 1874 -1945 (Published by the Seminar, 1900)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1967)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1976)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1980)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1982)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1990)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1992)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1995)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1997)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1998)

Phytoneuron (Guy L. Nesom, 2013)

Phytoneuron (Guy L. Nesom, 2015)

Pittonia :a series of papers relating to botany and botanists - Greene, Edward Lee, 1843 -1915 (Doxey & Co. [etc.], 1887)

Pittonia :a series of papers relating to botany and botanists - Greene, Edward Lee, 1843 -1915 (Doxey & Co. [etc.], 1889)

Plant and seed list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Frank H. Rose, 1958)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1934)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1942)

Plant life of Alabama : an account of the distribution, modes of association, and adaptations of the flora of Alabama, together with a systematic catalogue of the plants growing in the state - Mohr, Charles (Charles Theodore), 1824 -1901 (Brown Printing Co, 1901)

Plant life of Alabama, an account of the distribution, modes of association, and adaptations of the flora of Alabama, together with a systematic catalogue of the plants growing in the state - Mohr, Charles (Charles Theodore), 1824 -1901 (Brown printing co, 1901)

Plant life of Alabama. An account of the distribution, modes of association, and adaptations of the flora of Alabama, together with a systematic catalogue of the plants growing in the state. Prepared in cooperationwith the Geological Survey of Alabama - Mohr, Charles (Charles Theodore), 1824 -1901 (Govt. Print. Off, 1901)

Plant list, common names, Nevada - United States. Soil Conservation Service. (1964)

Plant lists - Pringle, Cyrus G. (Cyrus Guernsey), 1838 -1911 (1891)

Plant lists : Chile, Colombia, Ecuador, and Peru - Rusby, Henry Hurd, 1855 -1940 (1916)

Plant lists : China - Metcalf, Franklin P. (Franklin Post), 1892 -1955 (1924)

Plant lists : Colombia, Chile, Peru, and Brazil - Smith, Albert C. (Albert Charles), 1906 Apr 5 - (1922)

Plant lists, Mexico - Shreve, Forrest, 1878 -1950 (1939)

Plant lists : Mexico, Guatamala, and British Honduras - Lundell, Cyrus Longworth, 1907 -1994 (1931)

Plant lists : South American collections, Gray Herbarium - Harvard University. Gray Herbarium. (1929)

Plant lists : Texas - Lay, Daniel W., (1930)

Plant lists : Western United States and Mexico - Pringle, Cyrus G. (Cyrus Guernsey), 1838 -1911 (1882)

Plant names, scientific and popular, including in the case of each plant the correct botanical name in accordance with the reformed nomenclature, together with botanical and popular synonyms ... - Lyons, A. B. (Albert Brown), 1841 -1926 (Nelson, Baker & Co, 1900)

Plant responses to salinity : an indexed bibliography (Office of the Regional Administrator for Agricultural Research (Western Region), Science and Education Administration, U.S. Department of Agriculture, 1978)

The Plant world - Plant World Association. (Plant World Association [etc.], 1900)

The Plant world - Plant World Association. (Plant World Association [etc.], 1917)

The Plant world - Plant World Association. (Plant World Association [etc.], 1919)

Plantae diaphoricae florae Argentinae, ó, Revista sistemática de las plantas medicinales, alimenticias ó de alguna otra utilidad y de las venenosas, que son indígenas de la República Argentina ó que, originarias de otros países se cultivan ó se crian éspontáneamente en ella - Hieronymus, G. (Georg), 1846 -1921 (G. Kraft, 1882)

Plantae Fendlerianae Novi-Mexicanae :an account of a collection of plants made chiefly in the vicinity of Santa Fe´ New Mexico, by Augustus Fendler - Gray, Asa, 1810 -1888 (1848)

Plantae Hasslerianae, soit énumération des plantes recoltées au Paraguay par le dr. Emile Hassler ... - Chodat, R. (Robert), 1865 -1934 (Impr. Romet, 1898)

Plantae Lindheimerianae : an enumeration of F. Lindheimer's collection of Texan plants, with remarks and descriptions of new species, etc - Gray, Asa, 1810 -1888 (Printed by Freeman and Bolles, 1845)

Plantae Mexicanae. 1885-1906 - Pringle, Cyrus G. (Cyrus Guernsey), 1838 -1911 (C.G. Pringle, 1887)

Plantae Mexicanae. 1885-1906 - Pringle, Cyrus G. (Cyrus Guernsey), 1838 -1911 (C.G. Pringle, 1890)

Plantae preissianae sive enumeratio plantarum quas in australasia occidentali et meridionali-occidentali annis 1838-1841 collegit Ludovicus Preiss - Lehmann, Johann Georg Christian, 1792 -1860 (Sumptibus Meissneri, 1844)

Plantae Thunbergianae : ein Verzeichnis der von C. P. Thunberg in Südafrika, Indien und Japan gesammelten und der in seinen Schriften beschriebenen oder erwähnten Pflanzen, sowie von den Exemplaren derselben, die im Herbarium Thunbergianum in Upsala aufbewahrt sind - Thunberg, Carl Peter, 1743 -1828 (A.-b. Akademiska bokhandeln, 1918)

Plantae Utowanae. Plants collected in Bermuda, Porto Rico, St. Thomas, Culebras, Santo Domingo, Jamaica, Cuba, The Caymans, Cozumel, Yucatan and the Alacran shoals. Dec. 1898 to Mar. 1899. The Antillean cruise of the yacht Utowana. Mr. Allison V. Armour, owner and master - Millspaugh, Charles Frederick, 1854 -1923 (1900)

Plantae Utowanae. Plants collected in Bermuda, Porto Rico, St. Thomas, Culebras, Santo Domingo, Jamaica, Cuba, The Caymans, Cozumel, Yucatan and the Alacran shoals. Dec. 1898-Mar. 1899. The Antillean cruise of the yacht Utowana. Mr. Allison V. Armour, owner and master - Millspaugh, Charles Frederick, 1854 -1923 (1900)

Plantae Wrightianae texano-neo-mexicanae :an account of a collection of plants made by Charles Wright ... - Gray, Asa, 1810 -1888 (Smithsonian Institution, 1852)

Les plantes des montagnes et des rochers, leur acclimatation et leur culture dans les jardins - Correvon, Henry 1854 -1939 (L'auteur; [etc., etc.], 1914)

Plants and flowers of Kansas - Smyth, Bernard Bryan, 1843 - (Crane & Co, 1900)

Plants and their ways in South Africa - Stoneman, Bertha M., 1866 -1943 (Longmans, Green, 1915)

Plants for rock gardens grown by the Poughkeepsie Nursery Company, Inc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Poughkeepsie Nursery Company, Inc, 1933)

Plants indigenous to the colony of Victoria. Vol. 1 : Thalamiflorae - Mueller, Ferdinand von, 1825 -1896 (Government Printer, 1860)

Plants of Iowa; a preliminary list of the native and introduced plants of the state, not under cultivation - Greene, Wesley. (Bishard brothers, printers, 1907)

Plants of the Bahamas, Jamaica and Grand Cayman - Hitchcock, A. S. (Albert Spear), 1865 -1935 (1893)