title: Dental research at the National Bureau of Standards 1919-1969. History of Dental Research Section.
mesh_terms: D003764:Dental Materials / Q000266:history* / Q000592:standards*; D006077:Government Agencies; D049673:History, 20th Century; D012106:Research / Q000266:history*; D014481:United States
chemical_list: D003764:Dental Materials