Rai, R.K.
Environmental management / R.K.Rai, A.C.Mahapatra& N.P.Goel. - Jaipur : Rawat Publications , 1992. - 2v. : ills ; 24cm .
NULL
8170331548 NULL
ENVIRONMENTAL SCIENCE
372.357 / RAI/E
Environmental management / R.K.Rai, A.C.Mahapatra& N.P.Goel. - Jaipur : Rawat Publications , 1992. - 2v. : ills ; 24cm .
NULL
8170331548 NULL
ENVIRONMENTAL SCIENCE
372.357 / RAI/E