TY  - RPRT
TI  - A longitudinal study comparing apically repositioned flaps, with and without osseous surgery.
AU  - C T Olsen
AU  - W F Ammons
AU  - G van Belle
PY  - 1985
UR  - https://pubmed.ncbi.nlm.nih.gov/3864760/
ID  - 3864760
ER  -