TY  - BOOK
AU  - Govinda Rajan S V `
AU  -  Gopala Rao H G G
TI  - Soil and crop productivity
U1  - J:1.2, L1-;1 
PY  - 1971///
CY  - Bombay
PB  - Asia Publishing House       
KW  -  Soil
KW  - Agriculture
ER  -