TY  - RPRT
TI  - Classical conditioning with suitable controls in the classroom: a refinement.
AU  - L Weinstein
PY  - 1987
DO  - 10.2466/pr0.1987.61.1.15
UR  - https://pubmed.ncbi.nlm.nih.gov/3671602/
ID  - 3671602
ER  -