000 00285nam a2200121Ia 4500
008 190107s9999 xx 000 0 und d
020 _a9788121927819
100 _aR.S.Khurni
245 0 _aTextbook of Refrigation & Air Conditioning
260 _bS.Chand
365 _b625/-
942 _cBK
999 _c735
_d735