Facial soft tissue profile change in the North American Black with four first premolar extractions.

@article{Russell1986FacialST,
  title={Facial soft tissue profile change in the North American Black with four first premolar extractions.},
  author={Dorothy Russell and Russell T Nelson},
  journal={Journal of the Maryland State Dental Association},
  year={1986},
  volume={29 1},
  pages={24-8}
}