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    Symposium [on] weed control in tropical crops papers presented at the ninth Pest Control Council of the Philippines Conference commerating of the tenth anniversary of the Weed Scie...

    出版事項 1979
    図書

    Symposium [on] weed control in tropical crops papers presented at the ninth Pest Control Council of the Philippines Conference commerating of the tenth anniversary of the Weed Science Society of the Philippines, Inc., Philippine International Convention Center, Manila, May 3-6, 1978.

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