The preliminary activities are summarised of the organisation of the 1st international symposium on flint, held on occasion of the annual meeting of the Netherlands Geological Society and the 5th anniversary of the excavations of prehistoric flintmines.

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Grondboor & Hamer

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Nederlandse Geologische Vereniging

F.H.G. Engelen. (1971). De organisatie van het symposium. Grondboor & Hamer, 25(3), 9–10.