000 00288nam a2200121Ia 4500
008 190711s9999 xx 000 0 und d
082 _a628.8 A883
100 _aATTARCHAND
245 0 _aENVIRONMENTAL CHALLENGES
260 _aDELHI
_bU.D.H PUB
_c1985
300 _a25X17
942 _cBK
_2DDC
999 _c21488
_d21488