"diatomée hydrobiologie limnologie paléoécologie." . . "Diatoms." . . "Diatomées fossiles." . . "Diatomées Fossiles." . "Indikator." . . "Paléolimnologie." . . "Wasserstoffionenkonzentration." . . "Lake sediments." . . "Limnologia" . . . . . "Diatoms and lake acidity : Reconstructing pH from siliceous algal remains in lake sediments" . "Diatoms and lake acidity reconstructing pH from siliceous algal remains in lake sediments"@en . "Diatoms and lake acidity reconstructing pH from siliceous algal remains in lake sediments" . . . . . . . . . . . . . . "Fossile Kieselalgen" . . . . . . . . . . . . . . "Diatoms and lake acidity : reconstructing pH from siliceous algal remains in lake sediments" . . . . . . . . . . . "Diatoms and lake acidity"@en . "Kongress" . . . . . "Eaux continentales Acidification." . . . . "Contaminació de l'aigua" . . "Algae Plankton" . . "Diatoms, Fossil." . . "Acidification des cours d'eau, lacs, etc." . . "Acid pollution of lakes, rivers, etc." . . "Paleolimnology." . . "Kongress." . . "Sédiments lacustres." . . "Diatomees" . . "Diatomées." .