TY  - RPRT
TI  - Programmed textbooks in communication.
AU  - T R King
PY  - 1967
DO  - 10.1111/j.1460-2466.1967.tb01162.x
UR  - https://pubmed.ncbi.nlm.nih.gov/6045137/
ID  - 6045137
ER  -