title: A Comparative Study of Radiation Doses Received during Examinations with the Pantomograph, Orthopantomograph, Panorex, Status-X and Conventional Roengten Apparatus.
authors: (Depts Oral Surg. and Roentg., Inst. Dent., Univ. Helsinki and Inst. Rad. Phys. Helsinki, Finland).
authors: M
authors: M
authors: Altonen
authors: M
authors: M
authors: Heikkilå
authors: K
authors: K
authors: Mattila