000 00308nam a2200133Ia 4500
100 _aBallaney
942 _cBK
654 _aRefregeration & airconditining
245 _aRefregeration & airconditining
260 _bKhanna publishers
_aDelhi
_c1979
082 _a621.56
300 _a791
546 _aENGLISH
999 _c25508
_d25508