Economic and technical analysis of fertilizer innovations and resource use

Economic and technical analysis of fertilizer innovations and resource use

出版社：Ames : The Iowa State College Press, c1957.

出版年：1957

作者：Baum,E. L.

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Methodological procedures in the economic analysis of fertilizer use data

作者：Baum,E. L.
出版社：Ames : The Iowa State College Press, c1957.
出版年：1957

Methodlogical procedures in the Economic analysis of fertilizer Use data

作者：Baun,E. L. ed.
出版社：The Iowa State Colloge Press 1956
出版年：1956

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Industrial Use of Enzymes: Technical and Economic Barriers

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