1. Groundwater pollution potential of a landfill above the water table;Apgar;Ground Water,1971
2. Critical review of the equilibrium constants for kaolinite and sepiolite;Bassett,1979
3. Acid precipitation at a rural central Pennsylvania site;Bowersox,1980
4. Methods for collection of water samples for dissolved minerals and gases;Brown,1970
5. Aluminum and iron fixation in relation to exchangeable hydrogen in soils;Clark;Soil Sci.,1964