TY  - RPRT
TI  - Technique for making a customized shade guide.
AU  - S W Askinas
AU  - D A Kaiser
PY  - 1979
DO  - 10.1016/0022-3913(79)90182-3
UR  - https://pubmed.ncbi.nlm.nih.gov/379323/
ID  - 379323
ER  -