TY  - RPRT
TI  - An auditory prompting device for behavior observation.
AU  - A D Leifer
AU  - L J Leifer
PY  - 1971
DO  - 10.1016/0022-0965(71)90042-7
UR  - https://pubmed.ncbi.nlm.nih.gov/5106225/
ID  - 5106225
ER  -