The North American cup-fungi (inoperculates) - Seaver, Fred Jay, 1877 -1970 (1951)

The North American entomologist - Grote, Augustus Radcliffe, 1841 -1903 (Reinecke & Zesch, 1880)

North American fauna - U.S. Fish; Wildlife Service (Fish and Wildlife Service; for sale by the Supt. of Docs., U. S. Govt. Print. Off, 1968)

North American fauna - U.S. Fish; Wildlife Service (Fish and Wildlife Service; for sale by the Supt. of Docs., U. S. Govt. Print. Off, 1971)

North American fauna - U.S. Fish; Wildlife Service (Fish and Wildlife Service; for sale by the Supt. of Docs., U. S. Govt. Print. Off, 1981)

North American flora - New York Botanical Garden (New York Botanical Garden, 1922)

The North American Pyrenomycetes. A contribution to mycologic botany - Everhart, B. M. (Benjamin Matlack), 1818 -1904 (Ellis & Everhart, 1892)

The North American slime-moulds; being a list of all species of Myxomycetes hitherto described from North America, including Central America - Macbride, Thomas H. (Thomas Huston), 1848 -1934 (Macmillan Co, 1899)

The North American slime-moulds; a descriptive list of all species of myxomycetes hitherto reported from the continent of North America, with notes on some extralimital species - Macbride, Thomas H. (Thomas Huston), 1848 -1934 (Macmillan Co, 1922)

The North American sylva, or, A description of the forest trees of the United States, Canada, and Nova Scotia, not described in the work of F. Andrew Michaux and containing all the forest trees discovered in the Rocky Mountains, the territory of Oregon, down to the shores of the Pacific and into the confines of California, as well as in various parts of the United States : illustrated by 122 fine plates - Nuttall, Thomas, 1786 -1859 (Smith & Wistar, 1849)

The North American sylva, or A description of the forest trees of the United States, Canada and Nova Scotia considered particularly with respect to their use in the arts, and their introduction into commerce : to which is added a description of the most useful of the European forest trees : illustrated by 156 coloured engravings - Michaux, François-André, 1770 -1855 (Printed by C. d'Hautel, 1819)

The North American sylva; or, A description of the forest trees of the United States, Canada and Nova Scotia. Considered particularly with respect to their use in the arts and their introduction into commerce. To which is added a description of the most useful of the European forest trees ... - Nuttall, Thomas, 1786 -1859 (Rice, Rutter & co, 1865)

The North American sylva; or A description of the forest trees of the United States, Canada, and Nova Scotia, : considered particularly in respect to their use in the arts, and their introduction into commerce; to which is added a description of the most useful of the European forest trees. Illustrated by 156 coloured copperplate engravings, by Redoute, Bessa, etc - Nuttall, Thomas, 1786 -1859 (Robert P. Smith, Philadelphia, 1853)

The North American sylva or, a description of the forest trees of the United States, Canada, and Nova Scotia, considered particularly with respect to their use in the arts and their introduction into commerce, to which is added a description of the most useful of the European forest trees : illustrated by 156 colored engravings - Nuttall, Thomas, 1786 -1859 (Published by Rice, Rutter & Co. No. 525 Minor Street, 1865)

The North American sylva, or A description of the forest trees of the United States, Canada and Nova Scotia ... to which is added a description of the most useful of the European forest trees ... - Hillhouse, Augustus L. (Augustus Lucas), 1791 -1859 (Printed by C. D'Hautel, 1819)

North American trees : being descriptions and illustrations of the trees growing independently of cultivation in North America, north of Mexico and the West Indies - Britton, Nathaniel Lord, 1859 -1934 (H. Holt and Co, 1908)

North American trees; being descriptions and illustrations of the trees growing independently of cultivation in North America, north of Mexico and the West Indies; with the assistance of John Adolph Shafer - Britton, Nathaniel Lord, 1859 -1934 (Holt, 1908)

North American trees (exclusive of Mexico and tropical United States) A handbook designed for field use - Preston, Richard Joseph, 1905 - (Iowa State University Press, 1961)

North Carolina forest resources and industries - Cruikshank, James W. (U.S. Dept. of Agriculture, 1944)

North Platte River area designated (noxious) weed treatment program : environmental assessment record - United States. Bureau of Land Management. (Wyoming Department of Agriculture, 1978)

Northeastern Area Forest Health Report (1993)

Northeastern Area Forest Health Report–1992 (1994)

Northeastern forest pest reporter - United States. Forest Service. (U. S. Dept. of Agriculture. Forest Service, Region Seven, 1956)

The northern hardwood forest : its composition, growth, and management - Frothingham, E. H. (Earl Hazeltine), 1880 - (U.S. Dept. of Agriculture, 1915)

Northrup, King & Co.'s thirty-second annual catalogue [of] sterling seeds : 1916 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Northrup, King & Co, 1916)

Northrup, King & Co.'s thirty-third annual catalogue [of] sterling seeds : 1917 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Northrup, King & Co, 1917)

Notebooks of William Brewster - Brewster, William, 1851 -1919 (1883)

Notes for a flora of Nova Scotia Part I - Nova Scotian Institute of Science. (s.n, 1891)

Notes of North America, agricultural, economical, and social - Johnston, James F. W. (James Finley Weir), 1796 -1855 (W. Blackwood and sons, 1851)

Notes on the distribution of Pennsylvania plants : based on specimens in the Carnegie Museum of Natural History herbarium - Carnegie Museum of Natural History (Carnegie Museum of Natural History, 1989)

Notes on the forests of Quebec - Quebec (Province). Department of Lands; Forests. (Telegraph Print. Co, 1923)

Notes on trees on the grounds of McGill University - Dawson, J. W., (John William), 1820 -1899 (s.n, 1891)

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

Notizen aus dem Gebiete der Natur- und Heilkunde (Druck und Verlag des Landes-Industrie-Comptoirs, 1847)

Notizen aus dem Gebiete der Natur- und Heilkunde (G.H.S. pr. Landes-Industrie-Comptoir, 1836)

Nouveau dictionnaire d'histoire naturelle appliquée aux arts : principalement à l'agriculture et à l'économie rurale et domestique - Imprimerie de Crapelet (Paris, France) (Chez Deterville, 1803)

Nouveau dictionnaire d'histoire naturelle, appliquée aux arts, à l'agriculture, à l'économie rurale et domestique, à la médecine, etc (Chez Deterville, 1817)

Nouveau système de physiologie végétale et de botanique : fondé sur les méthodes d'observation, qui ont été développées dans le nouveau système de chimie organique, accompagné d'un atlas de 60 planches d'analyses - Royal College of Physicians of Edinburgh. (J.-B. Baillière, 1837)

Nouveau traité des plantes usuelles, spécialement appliqué a la médecine domestique, et au régime alimentaire de l'homme sain ou malade - Roques, Joseph, 1772 -1850 (P. Dufart, 1837)

Nouveaux élémens de botanique et de physiologie végétales - Richard, Achille, 1794 -1852 (B. Jeune, 1833)

Nouveaux éléments d'histoire naturelle médicale : comprenant des notions générales sur la zoologie, la botanique et la minéralogie, l'histoire et les propriétés des animaux et des végétaux utiles ou nuisibles à l'homme, soit par eux-mêmes, soit par leurs produits - Royal College of Physicians of Edinburgh. (Bailliere, 1869)

Nouveaux éléments d'histoire naturelle médicale : comprenant des notions générales sur la zoologie, la botanique et la minéralogie, l'histoire et les propriétés des animaux et des végétaux utiles ou nuisibles à l'homme, soit par eux-mêmes, soit par l - Cauvet, D. (Désiré), 1827 -1890 (J.B. Baillière, 1869)

Nouveaux éléments d'histoire naturelle médicale : comprenant des notions générales sur la minéralogie, la zoologie et la botanique, l'histoire et les propriétés des animaux et des végétaux utiles ou nuisibles à l'homme, soit par eux-mèmes, soit par leurs produits - Cauvet, D. (Désiré), 1827 -1890 (J.B. Baillière, 1877)

Nouveaux mémoires de l'Académie royale des sciences et belles-lettres de Bruxelles - Académie royale des sciences, des lettres et des beaux-arts de Belgique. (1842)

Nouveaux mémoires de l'Académie royale des sciences et belles-lettres de Bruxelles - Académie royale des sciences, des lettres et des beaux-arts de Belgique. (1843)

Nouvelle flore usuelle et médicale, ou, Histoire et description de tous les végétaux utiles, tant indigènes qu'exotiques, avec leur application à la médecine et à l'horticulture - Dupuis, Aristide, 1823 -1883 (Firmin Didot frères, 1853)

Nova acta Regiae Societatis Scientiarum Upsaliensis - Kungl. Vetenskaps-societeten i Uppsala. (Almqvist & Wiksells, 1780)

Novelties & general catalog - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W.A. Manda, Inc, 1916)

Novelties and specialties - Manda, W.A., Inc. (W.A. Manda, Inc, 1915)

Nursery catalog - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J.W. Erwin, 1928)

The nursery-manual; a complete guide to the multiplication of plants - Bailey, L. H. (Liberty Hyde), 1858 -1954 (Macmillan, 1920)

Nursery practice for trees and shrubs suitable for planting on the prairie-plains - Engstrom, H. E. (Harold Edwin), 1909 - (U.S. Dept. of Agriculture, 1941)

Nursery propagation of woody and herbaceous perennials for the Prairie Provinces - Canada. Agriculture Canada (Communications Branch, Agriculture Canada, 1982)

Observations on the flowering plants, ferns and fern allies growing wild in Marquette County, Michigan, in 1916 and 1917, especially in the vicinity of the Huron Mountain Club - University of Michigan. Museum of Zoology. (Published by the University, 1918)

Observations on the phenomena of plant life : a paper presented to the Massachusetts Board of Agriculture - Clark, William Smith, 1826 -1886 (Wright & Potter, 1875)

Occasional papers of the Museum of Natural History, the University of Kansas - University of Kansas. Museum of Natural History. (The University, 1978)

Occasional papers of the Museum of Zoology, University of Michigan - University of Michigan. Museum of Zoology. (University of Michigan, 1921)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1859)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1866)

Official guide to the museums of economic botany. No. 1, Dicotyledons - Royal Botanic Gardens, Kew. (Printed for H.M. Stationery Off., by Darling, 1907)

Ohio Biological Survey notes - Ohio Biological Survey. (Ohio Biological Survey, 2017)

The Ohio journal of science - Ohio Academy of Science. (Ohio Academy of Science, 1909)

The Ohio journal of science - Ohio Academy of Science. (Ohio Academy of Science, 1912)

The Ohio journal of science - Ohio Academy of Science. (Ohio Academy of Science, 1917)

The Ohio naturalist - Ohio Academy of Science. (Biological Club of the Ohio State University, 1900)

The Ohio naturalist - Ohio Academy of Science. (Biological Club of the Ohio State University, 1903)

The Ohio naturalist - Ohio Academy of Science. (Biological Club of the Ohio State University, 1904)

The Ohio naturalist - Ohio Academy of Science. (Biological Club of the Ohio State University, 1905)

The Ohio naturalist - Ohio Academy of Science. (Biological Club of the Ohio State University, 1906)

The Ohio naturalist - Ohio Academy of Science. (Biological Club of the Ohio State University, 1908)

The Ohio naturalist - Ohio Academy of Science. (Biological Club of the Ohio State University, 1910)

The Ohio naturalist - Ohio Academy of Science. (Biological Club of the Ohio State University, 1913)

Old-fashioned gardening; a history and a reconstruction - Tabor, Grace, 1873? - (McBride, Nast & company, 1913)

On food. Being lectures delivered at the South Kensington Museum - Lankester, Edwin, 1814 -1874 (R. Hardwicke, 1861)

On the Coleoptera known to occur in Indiana - Blatchley, W. S. (Willis Stanley), 1859 -1940 (W.B. Burford, contractor for state printing, 1910)

On the forestry conditions of northern Wisconsin - Roth, Filibert, 1858 -1925 (The State, 1898)

On the geology and natural history of the upper Missouri :Being the substance of a report made to Lieut. G.K. Warren, T.E. U.S.A - Hayden, F. V. (Ferdinand Vandeveer), 1829 -1887 (Printed by C. Sherman & son, 1862)

Opuscula philolichenum (J. Lendemer, 2004)

Opuscula philolichenum (J. Lendemer, 2017)

Opuscula philolichenum (J. Lendemer, 2018)

Opuscula philolichenum (J. Lendemer, 2020)

Orchard and garden (J.T. Lovett, 1889)

Orchard injury by the hickory tiger-moth - Isely, Dwight, 1887 -1974 (U.S. Dept. of Agriculture, 1918)

The orchids in the Ottawa District : floristics, phytogeography, population studies and historical review / Joyce M. Reddoch and Allan H. Reddoch - Ottawa Field-Naturalists' Club (The Ottawa Field-Naturalists' Club, 1997)

Oregon Nursery Company [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Oregon Nursery Company, 1920)

The organic constituents of higher plants: their chemistry and interrelationships - Robinson, Trevor. (Burgess Pub. Co, 1963)

Ornamental trees - Amawalk Nursery. (The Nursery, 1909)

Ornamental trees - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Orlando J. Smith, 1909)

Ornamental trees & plants : no. 2 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Maple Avenue Nurseries, 1901)

Ornamental trees, shrubs, and woody climbers - Macoun, W. T. (William Tyrrell), 1869 -1933 (Canada Dept. of Agriculture, 1927)

Ornithological bibliography - Coues, Elliott, 1842 -1899 (Geological Survey [etc.], 1878)

Ornithological biography, or an account of the habits of the birds of the United States of America ; accompanied by descriptions of the objects represented in the work entitled The Birds of America, and interspersed with delineations of American scenery and manners - Audubon, John James, 1785 -1851 (Adam Black, 1835)

The ornithology of Illinois - Ridgway, Robert, 1850 -1929 (H.W. Rokker, printer, 1889)

O.S.U. naturalist - Ohio State University. Biological Club. (Biological Club of Ohio State University, 1902)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1887)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1897)

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

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1908)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1918)

Ouachita National Forest, Arkansas-Oklahoma - United States. Forest Service. Southern Region. (U.S. Govt. Print. Off, 1937)

Our native trees and how to identify them : a popular study of their habits and their peculiarities - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (C. Scribner's Sons, 1900)

Our native trees and how to identify them; a popular study of their habits and their peculiarities - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (C. Scribner's Sons, 1912)

Our native trees and how to identify them; a popular study of their habits and their peculiarities - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (C. Scribner's Sons, 1910)

Our native trees and how to identify them; a popular study of their habits and their peculiarities - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (C. Scribner's Sons, 1913)

Our native trees and how to identify them; a popular study of their habits and their peculiarities - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (C. Scribner's Sons, 1917)