Biblioteca Digital

4 resultados para Precision farm

em Biodiversity Heritage Library, United States

Guide to the study of insects, and a treatise on those injurious and beneficial to crops: for the use of colleges, farm-schools, and agriculturists. By A. S. Packard, jr. With fifteen plates and six hundred and seventy wood-cuts.

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Guide to the study of insects and a treatise on those injurious and beneficial to crops : for the use of colleges, farm-schools, and agriculturists / by A.S. Packard, Jr.

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Fungoid diseases of farm and garden crops, With a prefatory note by E. A. Bessey.

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Bulletin / Ontario Agricultural College and Experimental Farm.

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Resumo:

124-125