Nitrogen fertilizer: retrospect and prospect

Frink, C.R. (Connecticut Agricultural Experiment Station, New Haven.) ; Waggoner, P.E ; Ausubel, J.H

Proceedings of the National Academy of Sciences - PNAS, 1999-02, Vol.96 (4), p.1175-1180 [Periódico revisado por pares]

United States: National Academy of Sciences of the United States of America

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