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1. Ask your dentist

Publication:: [United States : s.n., [between 1928 and 1935]
Subject(s):: Dental Care
Dental Caries
Focal Infection, Dental
Health Promotion

2. The influence of drugs on gastro-intestinal motility

Publication:: Chicago, Il. : The Laboratories, [1928]
Subject(s):: Gastrointestinal Motility -- drug effects