113W0617 https://collections.naturalsciences.be/ssh-geology-archives-plone6/boreholes/descriptions/ocr-descriptions/113w/113w0617 https://collections.naturalsciences.be/ssh-geology-archives-plone6/@@site-logo/logo-rbins.jpg 113W0617 PL.MAINVAULT 113W E.Delvaux 21 juillet 1892 617 (IX) = 9948 Même observation.
