TY  - RPRT
TI  - Mandibular molar with three distal root canals.
AU  - L E Quackenbush
PY  - 1986
DO  - 10.1111/j.1600-9657.1986.tb00123.x
UR  - https://pubmed.ncbi.nlm.nih.gov/3457702/
ID  - 3457702
ER  -