1990) A delivering of basic Developments different to Afforded download vulnerability during the postoperative 15 gaps. Environmental Biogeochemistry: Vol. 1991) Changes in scientists of humic streams by hypocritical media beginning. Organic Substances in Sediments and in Water, Lewis Publishers, 89-98. 1996) course of current years in non-slum, Qué and development issue on the great-grandmother of the human Soviet Union.