Artitin, C. PERBANDINGAN RADIOGRAFI Os MANDIBULAR BODY POSTERO-ANTERIOR TEGAK LURUS DENGAN POSTERO-ANTERIOR AXIAL 30* CHEPALAD: Radiographic Comparison of Perpendicular Postero-Anterior Os Mandibular and Cephalad Postero-Anterior Axial of 30* Chepalad. j. teras kesehatan. 2020, 3, 51-57.