TY  - RPRT
TI  - 1993 JCO orthodontic practice study. Part 3. Practice growth.
AU  - E L Gottlieb
AU  - A H Nelson
AU  - D S Vogels
PY  - 1993
UR  - https://pubmed.ncbi.nlm.nih.gov/8056863/
ID  - 8056863
ER  -