TY  - BOOK
AU  - Chitkara, M. G
TI  - Encyclopaedia of ecology, environment and pollution : the air (prevention and control of pollution)
SN  - 8170248914
U1  - 577.03 CHI 
PY  - 1998///
CY  - New Delhi
PB  - A. P. H. Pub. Corp
KW  - Environmental protection
KW  - Pollution--Environmental aspects
N1  - Includes bibliographical references and index
ER  -