By Aulakh Milkha S.   Singh Dhanwinder   Sadana Upkar S.   in Journal of Sustainable Agriculture

ISSN:1044-0046|25|1|97-115

Haworth Press‎(2004)‎

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By Shankar Arun   Sadana Upkar S.   Sekhon Nirmal K.   in Journal of Plant Nutrition

ISSN:0190-4167|37|11|1770-1781

Taylor & Francis Ltd‎(2014)‎

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