000 00482nam a22001697a 4500
003 OSt
005 20130425093553.0
008 130101b xxu||||| |||| 00| 0 eng d
020 _a8174884386
082 _aREF 574.09 CHH
100 _aChhatwal, G.R.
245 _aEncyclopaedia of environmental air pollution :
260 _aNew Delhi :
_bAnmol publications,
_c1997.
300 _a670p.
_bill.
_c25 cm.
650 _aEncyclopaedia of environmental air pollution.
942 _2ddc
_cREF
999 _c5762
_d5762