000 00349nam a2200169Ia 4500
008 200208s9999 xx 000 0 und d
082 _aH 333.7 BAK
245 0 _aUrja
260 _aNew Delhi
260 _bNational Book Trust India
260 _c2013
300 _a89p.
365 _b85
365 _dRS
650 _aEnergy
942 _cB
999 _c181157
_d181157