1. Barrett E, Brodln G (1955) The acidity of Scandanavian precipitation. Tellus 7:251?257
2. Buckley-Golder DH (1984) Acidity in the environment. HMSO, Energy Technology support unit, Harwell, 181 pp
3. Dollard GJ, Unsworth MH, Havey MJ (1983) Pollutant transfer in upland regions by occult precipitation. Nature 302:241?243
4. Donald AP, Stoner JH, Oldfield F, Rippey B, Natkanski F (1988) Atmospheric deposition. In: Edwards RW, Stoner JH, Gee AS (eds) Acid waters in Wales. Junk, Dortrecht (in prep)
5. Edwards RW, Stoner JH, Gee AS (1988) Acid waters in Wales. Junk, Dortrecht (in prep)