TY - BOOK AU - Rajan, S.V. Govinda AU - Rao, H.G. Gopala TI - Soil and crop productivity a handbook for the use of workers in agricultural extension, vocational agriculture and farmers in India/by S.V. Govind Rajan and H.G. Gopala Rao SN - 0210271000 U1 - 631.8 PY - 1971/// CY - Bombay: PB - Asia Publishing House, KW - Agriculture and related technologies KW - Technology (Applied sciences) KW - Soil fertility ER -