TY - BOOK AU - Trivedi,P.R.. AU - Raj,Gurdeep TI - Man and environment / T2 - Encyclopaedia of environmental Science, SN - 8171582311 U1 - 363.7 PY - 1992/// CY - New Delhi : PB - Akashdeep Publishing House , KW - ENVIRONMENTAL PROBLEMS N1 - NULL ER -