1. Dissolved organic constituents of sea water;Duursma,1965
2. E.D.T.A. titrations;Flaschka,1964
3. Biogeochemistry of trace metals;Goldberg,1957
4. The titration of nickel with E.D.T.A. at pH 2.8;Ter Haar;Anal. Chim. Acta,1956
5. The trace elements in the ocean; a bibliographic compilation;Høgdahl;Publ. of Central Inst. Industr. Res.,1963