TY  - RPRT
TI  - Audio-tape-slide teaching aids.
AU  - R R Phillips
PY  - 1970
DO  - 10.1111/j.1365-2133.1970.tb15087.x
UR  - https://pubmed.ncbi.nlm.nih.gov/4097696/
ID  - 4097696
ER  -