Search Results       Your search for [subject]Humic acid --Derivatives --Environmental aspects --Congresses returned 1 record.           Humic substances in the aquatic and terrestrial environment : proceedings of an international symposium, Linköping, Sweden, August 21-23, 1989. Berlin ; New York: Springer-Verlag, 1991. Subject: Humic acid --Derivatives --Congresses; Humic acid --Derivatives --Analysis --Congresses; Humic acid --Derivatives --Environmental aspects --Congresses.          Add to Book Cart Relevance: 45.32%