2. Effects of acid deposition

3. Characterization of acidity in natural waters

4. Formation of atmospheric acidity

5. Background precipitation acidity

6. Trends in the acidity of rain in Europe: a re-examination of European atmospheric chemistry network data

7. Trend development of precipitation-ph in central europe

8. Acid precipitation over the Netherlands

9. Investigation of the source regions for acid deposition in the Netherlands

10. Wet and dry deposition of acidic and heavy metal components in the federal republic of Germany

11. Heavy elements in acid rain

12. Acidic input to a beech and spruce forest

13. Field measurements of No and NO2 fluxes to and from the ground

14. Studies of the acidity and chemical composition of clouds

15. Preliminary measurements from an aircraft into the chemical composition of clouds

16. Model calculations of the effect of SO2, NOx or HC emission changes on regional scale sulphate and nitrate production