1. Biologic orthodontic therapy and reality;Oppenheim;Angle Orthod.,1935
2. Biologic orthodontic therapy and reality;Oppenheim;Angle Orthod.,1935
3. Biologic orthodontic therapy and reality;Oppenheim;Angle Orthod.,1936
4. Biologic orthodontic therapy and reality;Oppenheim;Angle Orthod.,1936
5. Biologic orthodontic therapy and reality;Oppenheim;Angle Orthod.,1936