E. Groessens (1983)
The Belgian marbles and their geological environment - Summary. Istanbul, 13-17 June 1983
International Marble Symposium, vol. p. 1 p.
21701, 124, 127, 133, 165, 183, 145, Ht, N, SYNAM, SYNDIN, TN, V, F, HISTCAR, PIERRE
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