000 00351nam a2200145Ia 4500
040 _cPK-LaCSN
082 _a500
_b"Qasir, Nadeem"
100 _a"Qasir, Nadeem"
245 2 _aA b c of environment
260 _bBloomfield Hall Publications
_aLahore
300 _a30
942 _cTB
999 _c844595
_d844572