TY  - BOOK
ED  - Global Environmental Monitoring System.
ED  - United Nations Environment Programme.
ED  - World Health Organization.
TI  - Assessment of urban air quality: report on the results of the WHO/UNEP programme on health-related environmental monitoring
AV  - TD883 .A85 1988
U1  - 363.7392 ASS 23
PY  - 1988///
CY  - Nairobi; Geneva, 
PB  - United Nations Environment Programme, World Health Organization
KW  - Air quality
KW  - Air
KW  - Pollution
N1  - At head of title: Global Environment Monitoring System
ER  -