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by Charles Walters
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Geo. P. Sexauer & Son
Federal-grant research at the state agricultural experiment stations
United States. Agricultural Research Service
Weeds & aliens
Edward James Salisbury
Natural Enemies
Ann E. Hajek
Biological control of tropical weeds using arthropods
Rangaswamy Muniappan
Noxious range weeds
Lynn F. James
Fundamentals of Weed Science
Robert L. Zimdahl
Nate the Great stalks stupidweed
Marjorie Weinman Sharmat
Invasive plants
Randy G. Westbrooks
Weeds of Canada
Clarence Frankton
