TY  - BOOK
AU  - Surendra Singh
AU  -  J.P. Mittal, 
TI  - Energy in production agriculture
SN  - 81-7099-407-1
U1  - 631.371 
PY  - 1999///2
CY  - New Delhi
PB  - Mittal Publication.
N1  - Surendra Singh & J.P. Mittal: Energy in production agriculture.  New Delhi.  Mittal Publication., 19992. 81-7099-407-1--(631.371SIN)
ER  -