000 00296nam a2200109 4500
082 _aHAB
100 _aHabibullah
245 _aVentilation Polution-Hazards of Depletion of Ozone Layer by CFCS of Refrigerants
260 _aJamshoro:
_bPakistan Study Centre,
_c1993.
300 _a70p. ;
942 _cBK
999 _c9439
_d9439