000 00323nam a2200133Ia 4500
008 220201s1992 xx 000 0 eng d
082 _a621.56
_bBAL
100 _aBallanay, PL
245 0 _aRefrigeration & airconditioning
250 _a9
260 _bNew Delhi : Khanna Publishers
_c1992
300 _a812
942 _2ddc
999 _c85355
_d85355