1. Humic Substances in Soil, Sediment, and Water;Aiken,1985
2. Organic and inorganic geochemistry of some coastal plain rivers of the southeastern United States;Beck;Geochim. Cosmochim. Acta,1974
3. Characteristics of colored surface waters;Black;J. Am. Water Works Assoc.,1963
4. Georgia temperatures;Carter,1970
5. An introductory review on humic substances: aspects of research on their genesis, their physical and chemical properties, and their effect on organisms;Flaig,1975