Effect of long-term application of N and P on available P and Zn contents of soil

Dahiya, S. S., Hooda, P. S. and Khera, A. P. (1989) Effect of long-term application of N and P on available P and Zn contents of soil. International Journal of Tropical Agriculture, 6(1-2), pp. 8-12. ISSN (print) 0254-8755

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