TY  - BOOK
AU  - Rupela, O P (Ed.) 
AU  - Johansen, C (Ed.) 
AU  - Herridge, D F (Ed.) 
TI  - Extending nitrogen fixation research to farmers' fields 
SN  - 92-9066-378-2
PY  - 1997///
CY  - Andhra Pradesh: 
PB  - International Crops Research Institute for the Semi-Arid Tropics, 
KW  - Agriculture
KW  - Soil fertility
KW  - Rice
ER  -