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024 _a75064
037 _cTextual
040 _aSDCL
_cSDCL
_beng
041 _2eng
_aeng
082 _aX:(G:55).1aN84, M5
100 _aAttar Chand
_9406814
245 0 _aEnvironmental challenges
_b A global Survey
260 _aDelhi
_bUDH Publishers
_c1985
300 _axlvi,335p
_ccm.
942 _hX:(G:55).1aN84, M5
_cTEXL
_2CC
999 _c774618
_d774618