Fertilizer energy use and crop yield relationships for wheat in the Punjab ecosystems

Author: Singh S.   Singh S.   Pannu C.J.S.   Mittal J.P.  

Publisher: Elsevier

ISSN: 0196-8904

Source: Energy Conversion and Management, Vol.37, Iss.10, 1996-10, pp. : 1547-1553

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Abstract