TY  - BOOK
AU  - Kanwar J.S.
AU  -  Datta N.P. Bhumbla D.R.  Biswas T.D.
TI  - International Symposium on Soil Fertility Evaluation Proceedings. Vol. 2
U1  - 631.4206 
PY  - 1972///
CY  - New Delhi
PB  - Indian Agricultural Research Institute
ER  -