Fighting the corn borer with machinery in the two-generation area

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Fighting the corn borer with machinery in the two-generation area

by C.O.Reed ... [et al.]

(Circular / United States Department of Agriculture, no.132)

[U.S. G.P.O.], 1930

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***記述は遡及データによる

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  • Circular

    United States Department of Agriculture

    U.S. Government Printing Office

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