Naturwissenschaftliche Rundschau : wöchentliche Berichte über die Fortschritte auf dem Gesammtgebiete der Naturwissenschaften (Druck und verlag von Friedrich Vieweg und Sohn, 1898)

Naturwissenschaftliche Rundschau : wöchentliche Berichte über die Fortschritte auf dem Gesammtgebiete der Naturwissenschaften (Druck und verlag von Friedrich Vieweg und Sohn, 1910)

Naturwissenschaftliche Wochenschrift - Deutsche Gesellschaft für Volkstümliche Naturkunde in Berlin. (G. Fischer [etc.], 1897)

Naturwissenschaftliche Wochenschrift - Deutsche Gesellschaft für Volkstümliche Naturkunde in Berlin. (G. Fischer [etc.], 1911)

Naturwissenschaftliche Wochenschrift - Deutsche Gesellschaft für Volkstümliche Naturkunde in Berlin. (G. Fischer [etc.], 1919)

Naturwissenschaftliche Wochenschrift - Deutsche Gesellschaft für Volkstümliche Naturkunde in Berlin. (G. Fischer [etc.], 1920)

Nederlandsch kruidkundig archief - Koninklijke Nederlandse Botanische Vereniging. (S. en J. Luchtmans, 1914)

New or unusual plant injuries and diseases found in Connecticut, 1916-1919 - Clinton, G. P. (George Perkins), 1867 -1937 (Connecticut Agricultural Experiment Station, 1920)

The New phytologist - Tansley, A. G., Sir, (Arthur George), 1871 -1955 (Academic Press, 1916)

The New phytologist - Tansley, A. G., Sir, (Arthur George), 1871 -1955 (Academic Press, 1922)

The new strawberry culture and fall bearing strawberries - Farmer, L. J. (Firm) (L.J. Farmer, 1922)

New York State Museum bulletin - New York State Museum. (University of the State of New York, 1942)

News - California Arboretum Foundation. (California Arboretum Foundation, 1989)

News - Indiana Native Plant; Wildflower Society. (Indiana Native Plant and Wildflower Society, 1997)

News letter - United States. Bureau of Plant Quarantine. (Bureau of Plant Quarantine, 1932)

Newsletter: clovers and special purpose legumes research - United States. Agricultural Research Service. Forage; Range Research Branch. (The Branch, 1967)

NHS news - Northwest Horticultural Society. (Northwest Horticultural Society, 1987)

NHS news - Northwest Horticultural Society. (Northwest Horticultural Society, 1990)

Nomenclator botanicus :enumerans ordine alphabetico nomina atque synonyma, tum generica tum specifica, et a Linnaeo et recentioribus de re botanica scriptoribus plantis phanerogamis imposita - Steudel, Ernst Gottlieb, 1783 -1856 (Sumptibus J.G. Cottae, 1824)

Nomenclator botanicus. Nominum ad finem anni 1858 publici juris factorum, classes, ordines, tribus, familias, divisiones, genera, subgenera vel sectiones designatium enumeratio alphabetica. Adjectis auctoribus, temporibus, locis systematicis, apud varios, notis literariis atque etymologicis et synonymis - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (Sumptibus T. Fischeri, 1873)

Nomenclator fungorum : exhibens ordine alphabetico nomina tam generica quam specifica, ac synonyma a scriptoribus de scientia botanica fungis imposita - Streinz, Wenzel M. (Wenzel Matern), 1792 -1876 (C. Gorischek, 1862)

North American native terrestrial orchids : propagation and production : conference proceedings, March 16 & 17, 1996, [held at the National Arboretum, Washington, D.C) - Allen, Carol (North American Native Terrestrial Orchid Conference, 1996)

Northern grown seed potatoes - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.A. Hyde, 1918)

Nouvelle flore des environs de Paris, suivant la méthode naturelle, avec l'indication des vertus des plantes usitées en médecine - Mérat, F. V. (François Victor), 1780 -1851 (Méquignon-Marvis, 1821)

Nouvelle flore française, descriptions succinctes et rangées par tableaux dichotomiques des plantes qui croissent spontanément en France et de celles qu'on y cultive en grand ... Ouvrage suivi d'une table générale des especes et de leurs synonymes - Gillet, C.-C. (Claude-Casimir), 1806 -1896 (Garnier freres, 1883)

Nouvelle iconographie fourragère : histoire botanique, économique et agricole des plantes fourragères et des plantes nuisibles qui se rencontrent dans les prairies et les paturages : avec planches gravées sur cuivre et coloriées - Gourdon, Jean, 1824 -1876 (P. Asselin, 1871)

Novorum actorum Academiae Caesareae Leopoldino-Carolinae Naturae Curiosorum - Academia Caesarea Leopoldino-Carolina Naturae Curiosorum. (Friedrich Frommann, 1855)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1865)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1898)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1910)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1914)

Oesterreichisches botanisches Wochenblatt ([L.W. Seidel], 1856)

Official handbook of the Division of Horticulture - Knight, George L. (The Division, 1930)

Oikos= boletín del Centro de Ecología [UNAM] (Instituto de Ecología, UNAM, 1993)

Olds' golden jubilee seed book, 1937, "tells the truth" : field & garden seeds, bulbs, plants, seed potatoes, garden tools, poultry supplies - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (L.L. Olds Seed Co, 1937)

Olds seed book - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (L.L. Olds Seed Co, 1935)

Olds seed book, 1936, 49th year - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (L.L. Olds Seed Co, 1936)

Olds' seed book for 1934: 47th year : seeds for field & garden, bulbs, plants, tools, seed potatoes, fertilizers, insecticides, poultry supplies - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (L.L. Olds Seed Co, 1934)

The Orchadian - Australasian Native Orchid Society (The Society, 2005)

Orchard and farm (Calkins Newspaper Syndicate, 1898)

Orchideeën welke in Ned.-Indië gekweekt kunnen worden - Dakkus, P. M. W. (A. C. Nix, 1935)

Organization lists of the agricultural colleges and experiment stations in the United States : with a list of agricultural experiment stations in foreign countries - United States. Office of Experiment Stations. (G.P.O, 1899)

Ornamental and turf manual - Montana. Environmental Management Division. (The Division, 1986)

Our farm crops. Being a popular scientific description of the cultivation, chemistry, diseases, remedies, &c., of the various crops cultivated in Great Britain and Ireland - Wilson, John, 1812 -1888 (Blackie and son, 1859)

Our seeds grow friends : spring 1932 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J. Chas. McCullough Seed Co, 1932)

Our seeds grow friends : spring 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J. Chas. McCullough Seed Co, 1933)

Outlines of British fungology; containing characters of above a thousand species of Fungi, and a complete list of all that have been described as natives of the British Isles - Berkeley, M. J. (Miles Joseph), 1803 -1889 (L. Reeve, 1860)

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, 1884)

Ozonium root rot - Peltier, George L. (George Leo), 1888 - (U.S. Dept. of Agriculture, 1926)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1916)

Pamphlets - Canada. Department of Agriculture. Publications Branch. (Dominion of Canada, Dept. of Agriculture, Publications Branch, 1915)

Pamphlets on forest protection (1900)

Pamphlets on forestry in California (1900)

Pamphlets on forestry in New York (1900)

Pamphlets on silviculture (1899)

Papaya - Ram, Mansha. (Indian Council of Agricultural Research, 2009)

Parasitic rhizoctonias in America - Peltier, George Leo, 1888 - (1916)