1. Background concentrations of the organochlorine pesticides and polychlorinated biphenyls in natural environment (by world data);Afanasyev;Monitoring of Background Contamination in Natural Environments,1989
2. Background concentrations of the organochlorine pesticides and polychlorinated biphenyls in natural environment (by world data);Afanasyev;Monitoring of Background Contamination in Natural Environments,1991
3. Persistence of DDT and its metabolites in a farm pond;Bridges;Transact. Amer. Fish. Soc.,1963
4. Background concentration of lead, mercury, arsenic and cadmium in natural environments (by world data);Burtseva;Monitoring of Background Contamination in Natural Environments,1991
5. Kiyko & Pogrebov (submitted). Mar. Pollut. Bull. (this issue).