The protection of hays, 1979-85 : citations from Agricola concerning diseases and other environmental consideration - National Agricultural Library (U.S.) (United States Dept. of Agriculture, National Agricultural Library, 1986)

The protection of lawn and turf grasses, 1979-April 1991 : citations from AGRICOLA concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (U.S. Dept. of Agriculture, National Agricultural Library, 1991)

The protection of leaf vegetables, January 1979-April 1988 : citations from AGRICOLA concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (U.S. Dept. of Agriculture, National Agricultural Library, 1988)

The protection of minor vegetable crops, 1985-1989 : citations from AGRICOLA concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (U.S. Dept. of Agriculture, National Agricultural Library, 1990)

The protection of ornamental plants, 1979-April 1989 : citations from AGRICOLA concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (U.S. Dept. of Agriculture, National Agricultural Library, 1989)

The protection of peanuts, January 1979-July 1985 : citations from AGRICOLA concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (U.S. Dept. of Agriculture, National Agricultural Library, 1986)

The protection of small grains, other than wheat, rice, or sorghums, 1979-April 1990 : citations from AGRICOLA concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (U.S. Dept. of Agriculture, National Agricultural Library, 1990)

The protection of sorghum and millets, January 1979 - July 1985 : citations from AGRICOLA concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (U.S. Dept of Agriculture, National Agricultural Library, 1986)

The protection of soybeans, January 1980-November 1984 : citations from Agricola concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (U.S. Dept. of Agriculture, National Agricultural Library, 1985)

The protection of stone fruits, excluding cherries, 1979-March 1985 : citations from Agricola concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (U.S. Dept. of Agriculture, National Agricultural Library, 1985)

The protection of sugarcane and sugar beets, January 1979-February 1988 : citations from AGRICOLA concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (U.S. Dept. of Agriculture, National Agricultural Library, 1988)

The protection of tropical and subtropical fruits, 1979-April 1990 : citations from AGRICOLA concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (U.S. Dept. of Agriculture, National Agricultural Library, 1990)

The protection of turf grasses, 1979-March 1987 : citations from AGRICOLA concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (U.S. Dept. of Agriculture, National Agricultural Library, 1987)

The protection of wheat, January 1980 - December 1984 : citations from Agricola concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (U.S. Dept. of Agriculture, National Agricultural Library, 1985)

The protection of wheat, January 1985-February 1989 : citations from AGRICOLA concerning diseases and other environmental considerations - National Agricultural Library (U.S.) (U.S. Dept. of Agriculture, National Agricultural Library, 1989)

Protoplasm - Seifriz, William, 1888 - (McGraw-Hill Book Company, inc, 1936)

A provisional host-index of the fungi of the United States - Farlow, W. G. (William Gilson), 1844 -1919 (1888)

A provisional host-index of the fungi of the United States - Farlow, W. G. (William Gilson), 1844 -1919 (1890)

A provisional host-index of the fungi of the United States - Farlow, W. G. (William Gilson), 1844 -1919 (1891)

A provisional list of the parasitic fungi of Wisconsin - Davis, John Jefferson. (1914)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 2012)

Publication. Field Columbian Museum. Botanical series - Field Columbian Museum. (Field Columbian Museum, 1896)

Publications of the Bureau of Plant Industry - United States. Bureau of Plant Industry. ([U.S. Dept. of Agriculture, Division of Publications], 1911)

Publications of the Southeastern Forest Experiment Station 1921-1958 - Southeastern Forest Experiment Station (Asheville, N.C.) (U.S. Dept. of Agriculture, Forest Service, Southeastern Forest Experiment Station, 1960)

Publications of the Southern Forest Experiment Station : 1955 through 1961 - Southern Forest Experiment Station (New Orleans, La.) (Southern Forest Experiment Station, 1962)

Publications of the Southern Forest Experiment Station : 1962 through 1970. Supplement - Southern Forest Experiment Station (New Orleans, La.) (USDA Forest Service, Southern Forest Experiment Station, 1971)

[Publications on plant pathology from Cornell Agricultural Experiment Station Memoirs, collected by H.S. Jackson.] - Jackson, H. S. (Herbert Spencer), 1883 -1951 (Cornell University], 1915)