TY - BOOK AU - International Symposium on Soil Fertility Evaluation, New Delhi, Feb. 14-19, 1971. TI - Soil fertility evaluation; proceedings U1 - 631.45.001.4(100) 1971.2.14/19 (082.2) L2.1-2 PY - 1972/// CY - New Delhi PB - Indian Society of Soil science KW - J.S. Kanwar (and others) KW - Kanwar, J.S., ed. KW - Soil fertility evaluation,Soil testing,Fertilizers and manures-Scientific application,Soil Nitrogen content ER -