TY  - BOOK
AU  - S.V. Govinda Rajan
AU  -  H.G. Goapala Rao, 
TI  - Soil and crop productivity
U1  - 631.4 
PY  - 1971///
CY  - New York
PB  - Asia Publishing House
N1  - S.V. Govinda Rajan & H.G. Goapala Rao: Soil and crop productivity.  New York.  Asia Publishing House, 1971.--(631.4GOV)
ER  -