TY - BOOK AU - Zafar,A.R. ED - Proceeding of the workshop Biological indices of environmental pollution ED - Central Board for the Prevention and Control of Water Pollution. TI - Biological indicators and indices of environmental pollution U1 - 363.739063(54) PY - 1982/// CY - New Delhi PB - aCentral Board for the Prevention and Control of Water Pollution KW - Environmental protection KW - Social aspects KW - India KW - Environmental policy N1 - Government publication ER -