Publications by authors named "Helm S"
[Directions for protection against hepatitis infection during dental care].
Tandlaegebladet
February 1973
Crowding in the permanent dentition after early loss of deciduous molars or canines.
Trans Eur Orthod Soc
October 1975
Recording system for the Danish Child Dental Health Services.
Community Dent Oral Epidemiol
December 1974
National statistics on caries and oral hygiene derived from the Danish Child Dental Health recording system.
Community Dent Oral Epidemiol
December 1974