1. Lysimeter investigations, II. Composition of rainwater at Geneva, N.Y. for 10-year period;Collison;Tech. Bull. N. Y. St. agric. Exp. Stn,1932
2. An investigation of the effect of acid precipitation on land productivity;Dahl,1971
3. Throughfall and stemflow chemistry in a northern hardwood forest;Eaton;J. Ecol.,1973
4. Short-long conifer needle syndrome;Gordon;Interim Report to the Environmental Protection Agency,1972
5. On the relationship between pH and the chemical composition in atmospheric precipitation;Granat,1972