Rai G D Non conventional sources of energy A textbook for engineering student English - 18 - New delhi Khanna publishers 2006 - 912p Pbk - Donated by Dr Yashica dhabhai . ISBN: 8174090738 Subjects--Topical Terms: Engineering Non conventional energy sources Rai --India LC Class. No.: 333.79 RAG N Dewey Class. No.: 333.79 RAG N