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United Nations Environment Programme ,  Food and Agriculture Organization of the United Nations ,  International Atomic Energy Agency (IAEA) ,  [Ensayo de Ia toxic/dad aguda letal de los contaminantes sobre peces e invertebrados marinos: Métodos de Referenda para Estudios de Con taminaciOn Marina No. 43] ,  [Test of the Acute Lethal Toxicity of Pollutants to Marine Fish and Invertebrates - Reference Methods for Marine Pollution Studies No. 43] ,  Test of the Acute Lethal Toxicity of Pollutants to Marine Fish and Invertebrates - Reference Methods for Marine Pollution Studies No. 43

United Nations Environment Programme ,  Food and Agriculture Organization of the United Nations ,  International Atomic Energy Agency (IAEA) ,  [Determination of Methylmercury in Selected Marine Organisms by Gas Chromatography - Reference Methods for Marine Pollution Studies No. 13] ,  Determination of Methylmercury in Selected Marine Organisms by Gas Chromatography - Reference Methods for Marine Pollution Studies No. 13

United Nations Environment Programme ,  International Oceanographic Commission ,  International Atomic Energy Agency (IAEA) ,  [Determination of Mercury in Estuarine Waters and Suspended Sediment by Cold Vapour Atomic Absorption Spectrophotometry - UNEP Regional Seas Reports and Studies No. 19] ,  Determination of Mercury in Estuarine Waters and Suspended Sediment by Cold Vapour Atomic Absorption Spectrophotometry - UNEP Regional Seas Reports and Studies No. 19

United Nations Environment Programme ,  International Atomic Energy Agency (IAEA) ,  [Determination of Total Chromium in Marine Sediments by Flameless Atomic Absorption Spectrophotometry - UNEP Regional Seas Reports and Studies No. 031] ,  Determination of Total Chromium in Marine Sediments by Flameless Atomic Absorption Spectrophotometry - UNEP Regional Seas Reports and Studies No. 031