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

New or unusual records and outstanding features of plant disease development in the United States in 1948 - United States. Plant Disease Survey. (Plant Disease Survey, Division of Mycology and Disease Survey, Bureau of Plant Industry, Soils, and Agricultural Engineering, Agricultural Research Administration, United States Department of Agriculture, 1949)

The New phytologist - Tansley, A. G., Sir, (Arthur George), 1871 -1955 (Academic Press, 1919)

The New phytologist - Tansley, A. G., Sir, (Arthur George), 1871 -1955 (Academic Press, 1920)

Newsletter - Hawaiian Botanical Society - Hawaiian Botanical Society. (The Society, 1979)

Newsletter - Hawaiian Botanical Society - Hawaiian Botanical Society. (The Society, 1996)

A növényrendszer áttekintése = Systematis vegetabilium janua, in usum auditorum R. Universitatis claudiopolitanae. Második átdolgozott kiadás - Kanitz, Ágost, 1843 -1896 (Ajtai K. Albert (Magyar Polgár) Könyvnyomdája, 1887)

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

Nursery diseases of southern hardwoods - Cordell, C.E. (1983)

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)

Nuytsia: journal of the Western Australian Herbarium - Western Australia. Department of Agriculture (Department of Biodiversity, Conservation and Attractions, 1991)

Nuytsia: journal of the Western Australian Herbarium - Western Australia. Department of Agriculture (Department of Biodiversity, Conservation and Attractions, 2001)

Nuytsia: journal of the Western Australian Herbarium - Western Australia. Department of Agriculture (Department of Biodiversity, Conservation and Attractions, 2007)

Nuytsia: journal of the Western Australian Herbarium - Western Australia. Department of Agriculture (Department of Biodiversity, Conservation and Attractions, 2011)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1895)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1896)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1906)

Official report of the session of the International Congress of Viticulture held in Recital Hall at Festival Hall, Panama-Pacific International Exposition, San Francisco, Cal., July 12 and 13, 1915 - Permanent Viticulture Commission. (s.n, 1915)

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, 1907)

An outline of the history of phytopathology - Whetzel, Herbert Hice, 1877 -1944 (W.B. Saunders, 1918)

Outlines of classification and special morphology of plants - Goebel, K. (Karl), 1855 -1932 (Clarendon Press, 1887)

Outlines of classification and special morphology of plants - Balfour, Isaac Bayley, 1853 -1922 (Clarendon Press, 1887)

Overzicht der ziekten en beschadigingen van het blad bij Deli-tabak - Hunger, F. W. T. (Friedrich Wilhelm Tobias), 1874 -1952 (G. Kolff & Co, 1901)

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

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

The palms of British India and Ceylon - Blatter, Ethelbert, 1877 -1934 (H. Milford, 1926)

Pamphlets on forest protection (1900)

Pamphlets on forestry in New York (1900)

Pamphlets on silviculture (1899)

Parasitic fungi of Illinois. Part II, Erysipheae, Lév - Earle, F. S. (Franklin Sumner), 1856 -1929 (J.W. Franks & Sons, 1887)

Parasitic fungi of Illinois / by T.J. Burrill - Earle, F. S. (Franklin Sumner), 1856 -1929 (J. W. Franks, 1887)

The parasitic fungi of New Jersey - Schwarze, Carl Alois, 1886 - (New Jersey Agricultural Experiment Stations, 1917)

I parassiti vegetali delle piante coltivate od utili - Ferraris, Teodoro. (Sineo & Bo, 1913)

A pathological survey of the Para rubber tree (Hevea brasiliensis) in the Amazon Valley - Weir, James R. (James Robert), 1882 -1943 (U.S. Dept. of Agriculture, 1926)

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