{"id":"000092293","type":"article","title":"Geologisch-petrographische Untersuchungen an Megalithgräbern Portugals","publisher":"Zabern","publisher-place":"Mainz","pages":"1-28","container-title":"Madrider Mitteilungen (Mainz), 32.1991, 0418-9744","author":[{"family":"Dehn","given":"Wolfgang."}],"issued":{"raw":"1991"}}