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MLA

Padgitt, Merritt. "Technical and Economic Causes of U.s. Corn and Soybean Yield Changes." ,

APA

Padgitt, M. (0000). Technical and economic causes of U.S. corn and soybean yield changes.

Chicago

Padgitt, Merritt. "Technical and economic causes of U.S. corn and soybean yield changes" (1982):