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  1. Certification requirements for fruits, vegetables, and cut flowers under Japanese beetle quarantine become effective for the season.
    By: Hoyt, Avery S. - United States.
    Publication info: [Washington, D.C.] :United States Department of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine,[1948]
    Contributed by: University of Florida, George A. Smathers Libraries
    Subjects: Certification  Control  Cut flowers  Fruit  Japanese beetle  Law and legislation  United States  Vegetables  
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  2. Certifying forest seeds /
    By: Rudolf, Paul O. - Lake States Forest Experiment Station (Saint Paul, Minn.)
    Publication info: St. Paul, Minn. :U.S. Dept. of Agriculture, Forest Service, Lake States Forest Experiment Station,1950.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Certification  Seeds  Trees  
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  3. Field crop production technician.
    By: Alberta.
    Publication info: [Edmonton] :Alberta Learning,[2000]
    Contributed by: University of Alberta Libraries (archive.org)
    Subjects: Alberta  Alberta Agriculture  Certification  Farmers  Field crops  Green Certificate Program  Study and teacing  
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  4. Plant variety protection : how it works for you.
    By: United States.
    Publication info: [Washington] :Dept. of Agriculture, Agricultural Marketing Service,1977.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Certification  Plant breeding  Plants, Cultivated  United States  Varieties  
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