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[CPITN in a group of Ankara University students].
Arpak MN, Akkaya MM. Arpak MN, et al. Among authors: akkaya mm. Ankara Univ Hekim Fak Derg. 1989 Sep;16(3):457-60. Ankara Univ Hekim Fak Derg. 1989. PMID: 2489497 Turkish.