000 00302nam a2200121Ia 4500
008 220201s1972 xx 000 0 eng d
082 _a621.56
_bPAT
100 _aPatel, RC, Patel,BM & Bhatt, GD
245 0 _aRefrigeration & air conditioning
260 _bBaroda
_c1972
300 _a518
942 _2ddc
999 _c78520
_d78520