تعداد ۱ پاسخ غیر تکراری از ۱ پاسخ تکراری در مدت زمان ۳,۱۴ ثانیه یافت شد.

1. Cooperative extension work

پدیدآورنده : ]by[ Lincoln David Kelsey with the collaboration of Cannon Chiles Hearne

کتابخانه: Library of Faculty of Social Sciences of Tehran University (Tehran)

موضوع : Agricultural extension work

رده :

S

544

.

K4

1963

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