TY  - RPRT
TI  - A retractor for the vertical sub-sigmoid ostectomy.
AU  - J H Robertson
PY  - 1968
DO  - 10.1016/s0007-117x(67)80070-2
UR  - https://pubmed.ncbi.nlm.nih.gov/5239995/
ID  - 5239995
ER  -