R Legrand (1967)
REINTERPRETATION DES SONDAGES DE DERGNEAU ET DE WATTRIPONT
Geological Survey of Belgium Professional Paper, vol. 1967/7 N.15 p.
02804, 112, Ht, 1, 2, CRET, DEV, SIL, DEVMOY, DEVSUP, CO, GI, F, FA, SON, STRA
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