TY  - BOOK
AU  - Rai, G.D
TI  - Non-Conventinal Energy Sources
U1  - 621.3745RAI 
PY  - 1997///
CY  - India
PB  - Khanna Publishers
UR  - http://books.google.com.pk/books?id=dezQlePSZWUC&pg=PA448&lpg=PA448&dq=non+conventional+energy+resources+by+gd+rai&source=bl&ots=4ZaIw_3Xpk&sig=YQecHQaSh0QzO51anWY74MYX96A&hl=en&sa=X&ei=MoboU9yYPOTT0QXzzYCgAg&ved=0CC8Q6AEwAg#v=onepage&q=non%20conventional%20energy%20resources%20by%20gd%20rai&f=false
ER  -