000
00305nam a2200109Ia 4500
008
220201s1999 xx 000 0 eng d
100
_a
CHATWAL, G R
245
0
_a
ENVIRONMENTAL AIR POLLUTION AND ITS CONCEPTS
260
_a
LONDON
_b
THAMES AND HUDSON PUBLISHING COMPANY
_c
1999
300
_a
591
942
_2
ddc
999
_c
60352
_d
60352