TY - BOOK AU - G.V.Kothandaraman, T.S.Manickam and K.Natarajan. TI - Rock phosphate in agriculture U1 - 631.859 M6 PY - 1986/// CY - Coimbatore PB - T.N.A.U. KW - Kothandaraman, G.V. KW - Rock phosphate ER -