000
00272nam a2200109Ia 4500
008
220201s2005 xx 000 0 eng d
100
_a
DESWAL, S.
245
0
_a
BASIC COURSE IN ENVIRONMENTAL STUDIES
260
_a
DELHI
_b
DHANPAT RAI
_c
2005
300
_a
8chap
942
_2
ddc
999
_c
68584
_d
68584