Sigurd Ramfjord and Major Ash, Jr.: periodontology and occlusion at Michigan.
Pihlstrom
B L
BL
Oral Health Clinical Research Center, University of Minnesota, School of Dentistry, Minneapolis 55455, USA.
D003766:Dental Occlusion; D049673:History, 20th Century; D006801:Humans; D008824:Michigan; D009664:Norway; D010517:Periodontics / Q000266:history*