TY - BOOK AU - Sethi,Inderjeet . AU - Sethi,M.S.. AU - Iqbal,S.A.. TI - Environmental pollution : causes,effects & control / SN - 8171691234 U1 - 363.73 PY - 1991/// CY - New Delhi : PB - Commonwealth Publishers , KW - ENVIRONMENTAL POLLUTION N1 - Includes index ER -