TY  - BOOK
AU  - Shivnandan Choudhary
TI  - Comparative Studies of The Effects of Pyrite & Gypsum on the Calcareous Saline-Alkali Soils of North Bihar
U1  - 631.41 
PY  - 1980///
CY  - RPCAU
KW  - MSc. Soil Science and Agril Chemistry
ER  -