000 00404nam a2200169Ia 4500
008 240220s9999 xx 000 0 und d
041 _aENG
100 _aEd : Diwakar Rao P. L.
245 0 _aEnergy conservation - hand book
260 _aNULL
260 _b"Utility Publication Ltd., Secunderabad."
260 _c1988
300 _a346p.
365 _b200
650 _aMECHANICAL
942 _cDBK
999 _c19000
_d19000