TY  - RPRT
TI  - Orthodontic root resorption studied by electron microscopy.
AU  - P Rygh
PY  - 1977
DO  - 10.1043/0003-3219(1977)047<0001:orrsbe>2.0.co;2
UR  - https://pubmed.ncbi.nlm.nih.gov/65136/
ID  - 65136
ER  -