TY  - BOOK
AU  - United Nations Environment Programme
ED  - United Nations Environment Programme
TI  - Urban air pollution in megacities of the world
T2  - World Health Organisation, Publication. Earthwatch : Global Environment Monitoring Systems
U1  - D854.1(Y33).N9, N2/UN 
PY  - 1992///
CY  - New York
PB  - United Nation U S A     
KW  - Computer Science
ER  -