TY  - RPRT
TI  - Teaching and testing with videotape and Polavision.
AU  - H Colcher
PY  - 1978
DO  - 10.1016/s0016-5107(78)73505-4
UR  - https://pubmed.ncbi.nlm.nih.gov/648846/
ID  - 648846
ER  -