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M. A. Ram Reddy, S. N. Khan, and N. D. Dobriyal, “Effect of Compost and Mineral Fertilizers on Development of Mycorphiza in Chir Pine (<I>Pinus roxburghii</I> Sargent) and Patula Pine (<I>P. Patula</I> Schlecht. and Cham)”, Indian Forester, vol. 102, no. 7, pp. 463–471, Jul. 1976.