Não informado. (1967). Iowa dental bulletin. University of Iowa, College of Dentistry.
Chicago-viite (17. p.)Não informado. Iowa Dental Bulletin. Iowa City, Iowa: University of Iowa, College of Dentistry, 1967.
MLA-viite (8. p.)Não informado. Iowa Dental Bulletin. University of Iowa, College of Dentistry, 1967.
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