ENVIRONMENTAL POLLUTION 1999 Vol.105 No.3

1. Persistent organic chemicals in the former Soviet Union∥L.A.Fedorov　　 　 (Russia).-p283 2. Biodegradation capacity of tributyltin by two CHLORELLA species∥C.K.　 　 Tsang.-p289 3. Depuration of metals from soft tissues of oysters (CRASSOSTREA GIGAS)　 　 transplanted from a contaminated site to clean sites∥K.W.Chan.-p299 4. Sediments as monitors of heavy metal contamination in the Ave rlver　　 　 basin (Portugal): multivariate analysis of data∥H.M.V.M.Soares.-p311 5. Foliar response of black cherry (PRUNUS SEROTINA) clones to ambient　　 　 ozone exposure in central Pennsylvania∥J.C.Lee.-p325 6. Inhibition of flowering and reproductive success in spreading dogbane　 　 (APOCYNUM ANDROSAEMIFOLIUM) by exposure to ambient ozone∥C.J.Bergweiler. 　 -p333 7. Economic upheaval in 1990-93 and the ecological situation in central　　 　 Germany∥L.Weissflog.-p341 8. Local impacts of a rural coal-burning generating station on lichen　　　 　 abundance in a New England forest∥K.J.Murphy.-p349 9. The application　of　preliminary　sediment　quality　criteria　to　metal 　 contamination in the Le An River∥W.Liu.-p355 10.Changes in Heavy metal contents in an acidic forest soil affected by　　 　 depletion of soil organic matter within the time span 1969-93∥M. Egli. 　 -p367 11.Long term measurements of wet deposition and precipitation scavenging　 　 of hexachlorocyclohexanes in Southern Norway∥F.Wania(Canada).-p381 12.Contamination of Donana food-chains after the Aznalcollar mine　disaster 　 ∥A.A.Meharg.-p387 13.A statistical approach for determining the environmental impact of　　　 　 polynuclear aromatic hydrocarbons in an oil spill-contaminated coastal　 　 area∥B.Lee.-p391