Humic substances and their role in the environment report of the Dahlem Workshop on Humic Substances and Their Role in the Environment, Berlin 1987, March 29 - April 3 ; [with 11 tbles] - Frimmel, Fritz H. 1941- (Wiley, 1988)
Xerograph. Reprint, erschienen 1996 im Verl. UMI, Ann Arbor, Mich.