Part,  Chapter, Paragraph

1  III,    10.  4.  1| Ceilings~NO~Nitrogen Oxide~NO2~Nitrogen Dioxide~O3~Ozone~
2  III,    10.  4.  1|      nitrogen oxides (NO - NO2 ) and sulphur dioxide (SO2 ).
3  III,    10.  4.  1| and ozone~· Direct SO2 and NO2 effects omitted, less evidence
4   IV,    12. 10    |  Report of Emissions (O3 , NO2 , SO2 , CO, PM-10, and snuff)