000 00313nam a2200145Ia 4500
008 131111s9999 xx 000 0 und d
100 _aSapru,R.K
245 _aNew environmental age
260 _aNew delhi
260 _bAshish
260 _c1990
300 _a418p.
650 _aEnvironment
763 _a6806
999 _c40946
_d40946