TY - BOOK AU - Tandon, H. L. S, TI - Nitrogen in Indian Agriculture 1961-1970 : A Bibliography on N, NP, NK, NPK and Other Related Factors U1 - 016.63184 PY - 1972/// CY - New Delhi PB - European Nitrogen Service Programme KW - Bibliographies of works on specific subjects KW - Fertilizers ER -