000 00350 a2200133 4500
041 _aEn
082 _a333.7
_bGUP
100 _aGupta , Arun K.Datta
245 _aResource study
_ba comprehensive approach
260 _c1993
_aCalcutta
_bNew Central Book Agency (P) LTD
_g1993
300 _c22 cm.
_a[xii],200 p.
650 _aENVIRONMENT
942 _cSR
999 _c17871
_d19418