Humic substances in the aquatic and terrestrial environment : proceedings of an international symposium, Linköping, Sweden, August 21-23, 1989 / B. Allard, H. Borén, A. Grimvall (eds.)
Papers presented at the International Symposium on Humic Substances in the Aquatic and Terrestrial Environment, held August 21-23, 1989, in Linköping, Sweden