POHTO, M [Variation in the roentgen-opacity of guttapercha points]. [electronic resource] - Suomen Hammaslaakariseuran toimituksia = Finska tandlakarsallskapets forhandlingar Mar 1950 - 11-24 p. digital Publication Type: Journal Article ISSN: 0039-551X Subjects--Topical Terms: Gutta-PerchaHumansTooth