TY  - RPRT
TI  - A simple method for gingival margin radiography.
AU  - J C Hatziotis
AU  - D Lambrou
DO  - 10.1902/jop.1966.37.4.340
UR  - https://pubmed.ncbi.nlm.nih.gov/5220901/
ID  - 5220901
ER  -