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  1. Cultures de remplacement pour les Prairies /
    By: Kiehn, Ferdinand A. - Canada.
    Publication info: Agriculture Canada,c1992.
    Contributed by: Agriculture and Agri-Food Canada (
    Subjects: Alternative agriculture  Aspect économique  Canada  Crops  Cultures de plein champ  Prairie Provinces  Variétés  
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  2. 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 (
    Subjects: Crop losses  Crops  Dept. of Agriculture  Disaster relief  Government policy  Management  Plants, Protection of  Quality  Research  United States  
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  3. Root-maggots and how to control them /
    By: Chittenden, F. H. - United States.
    Edition: 2d ed.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture, Bureau of Entomology,1906.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Agricultural pests  Control  Crops  Diseases and pests  Maggots  Roots (Botany)  
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  4. San Francisco County agricultural crop report.
    By: San Francisco (Calif.).
    Publication info: San Francisco :City and County of San Francisco, Dept. of Agriculture and Weights and Measures.
    Contributed by: San Francisco Public Library (
    Subjects: Agricultural pests  California  Crops  Periodicals  San Francisco  Statistics  
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  1. Co-evolution of domesticated crops and associated weeds
    By: Guglielmini,Antonio C - Ghersa,Claudio M - Satorre,Emilio H
    Type: Article
    In: Ecología austral
    Date: 2007-06-01
    Subjects: Crops  Demographical processes  Evolutionary mechanisms  Weeds  
    View Article (External)