R Dreesen, W Kasig, E Paproth, and H Wilder (1985)
Recent investigations within the Devonian and Carboniferous North and South of the Stavelot-Venn Massif
Neues Jahrbuch für Geologie und Paläontologie,Abhandlungen, vol. 171 p. 237-265.
17196, 166, 135, N, Lg, SYNVE, SYNDIN, FA, TN, STRATSEQ
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