TY  - BOOK
AU  - Singh, A. L.,
AU  - Singh, P. L.,
TI  - Nitrogen Fixation in Indian Rice Fields
SN  - 8185031258
U1  - 631 
PY  - 1989///
CY  - Bikaner
PB  - Agro Botanical
KW  - Nitrogen Fixation
ER  -