TY  - RPRT
TI  - Learner-control vs. program-control instructional multimedia: a comparison of two interactions when teaching principles of orthodontic appliances.
AU  - M Aly
AU  - J Elen
AU  - G Willems
PY  - 2005
DO  - 10.1111/j.1600-0579.2005.00385.x
UR  - https://pubmed.ncbi.nlm.nih.gov/16194247/
ID  - 16194247
ER  -