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Evolutionary trends in Foraminifera: a collection of papers dedicated to I.M. Van der Vlerk on the occasion of his 70th birthday /
Published 1963“…Amsterdam: Elsevier Pub.,…”
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Infra-red spectroscopy and molecular structure : an outline of the principles/
Published 1963“…Amsterdam : Elsevier Pub.,…”
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Characteristic frequencies of chemical groups in the infra-red/
Published 1963“…Amsterdam : Elsevier Pub.,…”
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