TY  - BOOK
AU  - World Health Organization
TI  - Air quality guidelines for Europe (WHO regional publications European series no - 23)
SN  - 92-890-1114-9
U1  - 614.71 
PY  - 1987///
CY  - Geneva
PB  - World Health Oraganization
KW  - WHO
KW  - Public health -- Epidemiology
N1  - Gift; WHO, public health, epidemiology, global health
ER  -