000 00309nam a2200133Ia 4500
008 160316s1989 xxu||||| |||| 00| 0 eng d
020 _a
100 _aM . S Singh
245 _aEvironmental Chnages And Development
250 _a1st
260 _aALLAHABAD
_bCHUGH PUB.
_c1989
300 _a284
700 _a
_a
999 _c38171
_d38171