1. Acid precipitation in the Northeastern United States;Cogbill;Wat. Resour. Res.,1974
2. Ammonia flux into the atmosphere from a grazed pasture;Denmead;Science,1974
3. Proc. First Int. Sym. on on Acid Precipitation and the Forest Ecosystem;Dochinger,1976
4. Alkalinity and total carbonate in sea water. A plea for p-T-independent data;Dryssen;Tellus,1967
5. Composition of atmospheric precipitation. I. sampling technique. Use of ion exchange resins;Egner,1949