Agronomy in a chaning world and research needs for the seventies

Black, C.A....[et.al]

Agronomy in a chaning world and research needs for the seventies by C.A. Black, ...[et.al] - Madison American Society of Agronomy 1971 - 65 p. - No. 19 ASA special publications .


Agronomy

631(072) / B627A
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