TY  - BOOK
ED  - World Health Organization. Geneva
TI  - Nitrogen Oxides 
T2  - (Enviornmental health criteria, 188)
SN  - 92-4-157188-8
PY  - 1997///
CY  - Geneva 
PB  - WHO
KW  - Nitrogen oxides
KW  - Nitrogen-dioxides
ER  -