TY  - RPRT
TI  - Orthodontics--mechanical or biologic objectives?
AU  - A Jacobson
PY  - 1973
DO  - 10.1016/0002-9416(73)90276-5
UR  - https://pubmed.ncbi.nlm.nih.gov/4577166/
ID  - 4577166
ER  -