000 00293nam a2200121Ia 4500
008 180721s9999 xx 000 0 und d
100 _a"Sawhney, G.S."
245 0 _aNon-Conventional Energy resources
260 _bPHI Learning Pvt. Ltd
260 _c2012
365 _b350.00
942 _cBK
999 _c149521
_d149521