4Th International Symposium on Model Estuaries - the Biogeochemistry of Organic Compounds and Trace Metals in Macrotidal Estuaries, Date: APR, 1995, Location: NANTES, FRANCE, Sponsors: Inst Francais Rech Exploitat Mer, Ecole Normale Superieure, Montrouge, Int Sci Fdn, Washington, DC, UNESCO, Nantes City