TY - BOOK AU - Dara, S.S TI - A textbook of environmental chemistry and pollution control SN - 81-219-0883-3 (Res f U1 - 363.73/DAR PY - 2002/// CY - New Delhi PB - S. Chand KW - Pollution control industry KW - Environment KW - Water-Pollution KW - Air-Pollution KW - Pollution KW - Social problems, welfare and services ER -