Mycologia - New York Botanical Garden (New York Botanical Garden, 1919)

Mycologia - New York Botanical Garden (New York Botanical Garden, 1920)

Mycologia - New York Botanical Garden (New York Botanical Garden, 1922)

Mycological writings of C. G. Lloyd - Lloyd, C. G. (Curtis Gates), 1859 -1926 (1898)

Mycologisches Centralblatt = Mycological review = Revue mycologique = Revista micologica : Zeitschrift für allgemeine und angewandte Mycologie : Organ für wissenschaftliche Forschung auf den Gebieten der allgemeinen Mycologie, Gärungschemie und technischen Mycologie - Wehmer, C. (Carl), 1858 -1935 (G. Fischer, 1914)

Die Nadelhölzer : mit besonderer Berücksichtigung der in Mitteleuropa winterharten Arten : eine Einführung in die Nadelholzkunde für Landschaftsgärtner, Gartenfreunde und Forstleute - Tubeuf, Carl, Freiherr von, 1862 -1941 (Verlag von E. Ulmer, 1897)

Die Nadelhölzer (Koniferen) und übrigen Gymnospermen - Neger, Franz Wilhelm, 1868 -1923 (G.J. Göschen, 1907)

The National geographic magazine - National Geographic Society (U.S.) (National Geographic Society, 1899)

The National nurseryman : for growers and dealers in nursery stock - American Association of Nurserymen. (National Nurseryman Pub. Co.], 1915)

The National nurseryman : for growers and dealers in nursery stock - American Association of Nurserymen. (National Nurseryman Pub. Co.], 1918)

The National nurseryman : for growers and dealers in nursery stock - American Association of Nurserymen. (National Nurseryman Pub. Co.], 1922)

National proceedings : forest and conservation nursery associations - Rocky Mountain Forest; Range Experiment Station (Fort Collins, Colo.) (U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1995)

Native Plant Society of Oregon - Native Plant Society of Oregon. (The Society, 2009)

Native plants of the National Park Region - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Frank H. Rose, 1949)

Native trees of Canada - Canada. Forestry Branch. (Dept. of the Interior, 1917)

Native trees of Canada - Canada. Forestry Branch. (Minister of the Interior, 1917)

Native trees of Canada - Canada. Forestry Branch. (Dept. of the Interior, Forestry Branch, 1921)

Native woody plants of the United States : their erosion-control and wildlife values - Mulford, Furman Lloyd, 1869 - (U.S. Dept. of Agriculture, 1938)

Native woody plants of the United States, their erosion-control and wildlife values - United States. (U. S. Govt. print. off, 1938)

Natural history - American Museum of Natural History (1923)

Natural history - American Museum of Natural History (American Museum of Natural History, 1923)

The Natural History of the Scarborough district - Rimington, F. C. (Scarborough Field Naturalists' Society, 1953)

Natural infection of new hosts by hemlock dwarf mistletoe - Rocky Mountain Forest; Range Experiment Station (Fort Collins, Colo.) (Rocky Mountain Forest and Range Experiment Station, U.S. Dept. of Agriculture, 1994)

The natural regeneration of Douglas fir in the Pacific Northwest - Hofmann, Julius Valentine, 1882 - (U.S. Dept. of Agriculture, 1924)

Natural vegetation: Grassland and desert shrub - United States. Department of Agriculture. (Govt. Print. Off, 1924)

Die Naturalisation ausländischer Waldbäume in Deutschland - Booth, John, 1836 -1909 (J. Springer, 1882)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1930)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1935)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 1975)

The naturalist - West-Riding Consolidated Naturalists' Society (Simpkin, Marshall, 2013)

Naturalist's guide to the Americas - Ecological Society of America. Committee on the Preservation of Natural Conditions. (Williams & Wilkins, 1926)

Nature - Lockyer, Norman, Sir, 1836 -1920 (Macmillan Journals Ltd., etc, 1918)

Nature and science on the Pacific coast : a guide-book for scientific travelers in the West - American Association for the Advancement of Science. Pacific Coast Committee. (P. Elder, 1915)

Die Natürlichen Pflanzenfamilien nebst ihren Gattungen und wichtigeren Arten, insbesondere den Nutzpflanzen, unter Mitwirkung zahlreicher hervorragender Fachgelehrten begründet - Engler, Adolf, 1844 -1930 (W. Engelmann, 1887)

Die Naturwissenschaften - Gesellschaft Deutscher Naturforscher und Ärzte. (Springer-Verlag, 1913)

Naturwissenschaftliche Rundschau : wöchentliche Berichte über die Fortschritte auf dem Gesammtgebiete der Naturwissenschaften (Druck und verlag von Friedrich Vieweg und Sohn, 1900)

Naturwissenschaftliche Wochenschrift - Deutsche Gesellschaft für Volkstümliche Naturkunde in Berlin. (G. Fischer [etc.], 1890)

Neue forstliche Blätter - Bühler, Anton, 1848 -1920 (Georg Schnürlen, 1902)

The New England farmer (J. Nourse, 1860)

The new forestry; or, The continental system adapted to British woodlands and game preservation - Simpson, John. (Pawson & Brailsford, 1903)

The new forestry, or The continental system adapted to British woodlands and game preservation - Simpson, John. (Pawson & Brailsford, 1900)

New pest response guidelines : Lymantriidae - United States. Animal; Plant Health Inspection Service. Plant Protection; Quarantine Programs. (U.S. Dept. of Agriculture, Animal and Plant Health Inspection Service, Plant Protection and Quarantine, 2000)

The New phytologist - Tansley, A. G., Sir, (Arthur George), 1871 -1955 (Academic Press, 1914)

New York horticultural review - Reagles, C. (C. Reagles, 1855)

News letter - United States. Bureau of Entomology; Plant Quarantine. (Bureau of Entomology and Plant Quarantine, 1934)

News letter - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Manning Seed Company, 1950)

News letter bulletin no. 4 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Manning Seed Company, 1951)

News letter : West Coast forest tree seeds collected annually - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Manning Seed Company, 1954)

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

North American fauna - U.S. Fish; Wildlife Service (Fish and Wildlife Service; for sale by the Supt. of Docs., U. S. Govt. Print. Off, 1918)

North American fauna - U.S. Fish; Wildlife Service (Fish and Wildlife Service; for sale by the Supt. of Docs., U. S. Govt. Print. Off, 1931)

North American fauna - U.S. Fish; Wildlife Service (Fish and Wildlife Service; for sale by the Supt. of Docs., U. S. Govt. Print. Off, 1975)

North American flora - New York Botanical Garden (New York Botanical Garden, 1924)

North American flora - New York Botanical Garden (New York Botanical Garden, 1925)

North American flora - New York Botanical Garden (New York Botanical Garden, 1931)

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, 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 121 colored plates - Nuttall, Thomas, 1786 -1859 (R. Baldwin, 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 ... - Nuttall, Thomas, 1786 -1859 (Rice, Rutter & co, 1865)

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)

Northern goshawk surveys on BLM lands within the St. Joe Mountains of northern Idaho : final report - Nongame; Endangered Wildlife Program (Idaho) (Bureau of Land Management, Upper Columbia and Salmon-Clearwater District, 1998)

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

Northwest Ornamental Horticultural Society newsletter - Northwest Horticultural Society. (Northwest Ornamental Horticultural Society, 1976)

Note on the distribution of some of the more important trees of British Columbia - Dawson, George Mercer, 1849 -1901 (s.n, 1880)

Note on the distribution of some of the more important trees of British Columbia - Dawson, George Mercer, 1849 -1901 (Geological Survey of Canada, 1880)

Notes from the Royal Botanic Garden, Edinburgh - Royal Botanic Garden, Edinburgh. (H. M. Stationery Off, 1900)

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

Die Nutzhölzer der Vereinigten Staaten, ihre Handels- und Lokalbezeichnungen, botanischen Charaktere und Verbreitungs- gebiete. Speziell für den Holzhandel bearb - Rattinger, Karl K (Forstbüro Silva, 1910)

Observations on Rhizina inflata - Weir, James R. (James Robert), 1882 -1943 (1915)

Occasional paper - Entomological Society of British Columbia (The Society, 1951)

Occasional paper - Entomological Society of British Columbia (The Society, 2015)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1905)

Occasional papers of the Farlow Herbarium of Cryptogamic Botany - Farlow Reference Library; Herbarium. (Harvard University, Farlow Herbarium of Cryptogamic Botany, 1980)

Occurrence of armillaria spp. in forests of the northern Rocky Mountains - Intermountain Research Station (Ogden, Utah) (U.S. Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station, 1987)

Occurrence of conifer seedlings and their microenvironments on disturbed sites in central Idaho - Intermountain Research Station (Ogden, Utah) (U.S. Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station, 1987)

Opuscula philolichenum (J. Lendemer, 2014)

Opuscula philolichenum (J. Lendemer, 2017)

Orcutt Seed and Plant Company : trade price list 1889-1890 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Orcutt Seed and Plant Company, 1889)

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

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1902)

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

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

Outlines of course of instuction in agricultural nature study for the rural schools of California - California Agricultural Experiment Station. (1923)

Oxford gardens, based upon Daubeny's Popular guide to the physick garden of Oxford: with notes on the gardens of the colleges and on the University park - Gunther, R. T. (Robert Theodore), 1869 -1940 (Parker & son; [etc., etc.], 1912)

Oxford gardens. Based upon Daubeny's Popular guide to the physick garden of Oxford : with notes on the gardens of the colleges and on the University Park - Gunther, R. T. (Robert Theodore), 1869 -1940 (Parker, 1912)

Pacific coast avifauna - Cooper Ornithological Club. (Cooper Ornithological Club, 1921)

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

Pacific silver fir : a bibliography with abstracts - Williams, Carroll B. (Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1965)

Pacific yew draft environmental impact statement - United States. Bureau of Land Management. (Portland, Ore, 1993)