Beets, C.
Citations containing new species:
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Beets, C., 1941. Verh. Geol. Mijnb. Genoot. Ned. Kol.. Geol., 13 (1 ).
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van Regteren Altena, C. O., and Beets, C., 1944. Verh. Geol. Mijnb. Genoot. Ned. Kol.. Geol., 14.
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Beets, C., 1953. Leid. Geol. Meded., 17.
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Beets, C., 1983. Scripta Geol., 67.
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Beets, C., 1984. Scripta Geol., 74.