TY  - RPRT
TI  - 1997 JCO Orthodontic Practice Study. Part 3. Practice growth.
AU  - E L Gottlieb
AU  - A H Nelson
AU  - D S Vogels
PY  - 1997
UR  - https://pubmed.ncbi.nlm.nih.gov/9511587/
ID  - 9511587
ER  -