Prabhakar, V. K Encyclopaedia of environmental pollution and awareness in 21st century, Vol. 3 air pollution - New Delhi Anmol Pub. 2000 - viii,266 p. ISBN: 8126106514 Subjects--Topical Terms: ENVIRONMENTAL POLLUTIONENVIRONMENTAL PROBLEMSSOCIAL PROBLEMS Dewey Class. No.: 363.703 / ENC