TY  - RPRT
TI  - Class III crowding: the extraction dilemma.
AU  - M A Campbell
AU  - A Jacobson
PY  - 1987
DO  - 10.1016/0889-5406(87)90256-3
UR  - https://pubmed.ncbi.nlm.nih.gov/3479004/
ID  - 3479004
ER  -