TY  - RPRT
TI  - [Continuous performance control in education and instructions. 2. Programmed methods in the department of orthodontic stomatology (non-machine evaluation methods)].
AU  - R Krämer
AU  - J Weiskopf
PY  - 1972
UR  - https://pubmed.ncbi.nlm.nih.gov/4506846/
ID  - 4506846
ER  -