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 Urbani C. B., Graeser S., 1987: REM-Analysen an einer pyritisierten Ameise aus Baltischen Bernstein. 16 pp. Stutt. Beitr. Naturk., Ser. B, Nr. 133: 1-16.

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 Valkeila E., 1959: Lipara-äkämien asukkaista Suomessa. 4 pp. 

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