Παραπομπή APA

Umeki, T. (1990). Effects of power-tiller use on farm income in the sage plain area, sage preffecture, Japan. Japan: Department of Agriculture Economics.

Παραπομπή Chicago Style

Umeki, Toshimi. Effects of Power-tiller Use On Farm Income in the Sage Plain Area, Sage Preffecture, Japan. Japan: Department of Agriculture Economics, 1990.

Παραπομπή MLA

Umeki, Toshimi. Effects of Power-tiller Use On Farm Income in the Sage Plain Area, Sage Preffecture, Japan. Japan: Department of Agriculture Economics, 1990.

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