TY  - RPRT
TI  - Root canals in one-rooted maxillary second molars.
AU  - O Carlsen
AU  - V Alexandersen
AU  - T Heitmann
AU  - P Jakobsen
PY  - 1992
DO  - 10.1111/j.1600-0722.1992.tb01067.x
UR  - https://pubmed.ncbi.nlm.nih.gov/1411268/
ID  - 1411268
ER  -