Begg, P. R., Begg orthodontic theory and technique - 3d ed. - Philadelphia : Saunders, 1977. - xii, 705pg. : ill. ; ISBN: 0721616704 Subjects--Topical Terms: Orthodontics.Begg appliance.Orthodontics, Corrective.Technology, Dental. LC Class. No.: MED RK521 / B4