TY  - RPRT
TI  - Effects of tutors with subject expertise on the problem-based tutorial process.
AU  - M Silver
AU  - L A Wilkerson
PY  - 1991
DO  - 10.1097/00001888-199105000-00017
UR  - https://pubmed.ncbi.nlm.nih.gov/2025366/
ID  - 2025366
ER  -