TY - BOOK AU - Trivedi, P.R. AU - Raj, Gurdeep. TI - Encyclopaedia of Environmental Sciences: Environmental Problems And Impact Assessment SN - 8171582796 U1 - REF 333.003 TRI. PY - 1992/// CY - New Delhi PB - Akashdeep Publishing House KW - Environmental Sciences N1 - Includes Bibliographical reference ER -