title: [Recall 3+ research project: its status at the end of 1981].
mesh_terms: D000328:Adult; D003777:Dental Prophylaxis; D005260:Female; D006801:Humans; D008297:Male; D010512:Periodontal Index; D011313:Preventive Dentistry / Q000193:education; D012017:Referral and Consultation / Q000706:statistics & numerical data; D012106:Research; D013557:Switzerland
vernacular_title: Das Forschungsprojekt Recall 3+, Stand Ende 1981.