TY  - BOOK
AU  - GREWAL, Narinder Singh
TI  - Bio-gas plantan di usari ate sambh-sambhal
U1  - RRSRP 665.77 G83B 
PY  - 1999///
CY  - Ludhiana
PB  - PAU. Communication
KW  - BIOGAS
KW  - PAU.COMM
ER  -