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Cultures de remplacement pour les Prairies /
By: Kiehn, Ferdinand A. - Canada.
Publication info: Agriculture Canada,c1992.
Contributed by: Agriculture and Agri-Food Canada (archive.org)
Subjects: Alternative agriculture Aspect économique Canada Crops Cultures de plein champ Prairie Provinces Variétés
Review of the U.S. Department of Agriculture's crop disaster assistance and 1993 crop quality issues : hearing before the Subcommittee on General Farm Commodities of the Committee on Agriculture, House of Representatives, One Hundred Third Congress, first session, September 28, 1993.
By: United States.
Publication info: Washington :For sale by the U.S. G.P.O., Supt. of Docs., Congressional Sales Office,1994.
Contributed by: Boston Public Library (archive.org)
Subjects: Crop losses Crops Dept. of Agriculture Disaster relief Government policy Management Plants, Protection of Quality Research United States
Root-maggots and how to control them /
By: Chittenden, F. H. - United States. - United States.
Edition: 2d ed.
Publication info: Washington, D.C. :U.S. Dept. of Agriculture, Bureau of Entomology,1906.
Contributed by: Unknown
Subjects: Agricultural pests Control Crops Diseases and pests Maggots Roots (Botany)
Co-evolution of domesticated crops and associated weeds
By: Guglielmini,Antonio C - Ghersa,Claudio M - Satorre,Emilio H
In: Ecología austral
Subjects: Crops Demographical processes Evolutionary mechanisms Weeds
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