{"id":"001502221","type":"book","title":"Un grave problème","publisher":"Hayez","publisher-place":"Bruxelles","container-title":"Bulletin de la Société Belge de Géologie de Paléontologie et d' Hydrologie (Bruxelles) T. 21 (1907)-Mémoires","author":[{"family":"Rutot","given":"Aimé"}],"issued":{"raw":"1907"}}