TY  - RPRT
TI  - Operant conditioning in evaluating children with learning problems.
AU  - J Francis-Williams
PY  - 1967
DO  - 10.1111/j.1469-8749.1967.tb02282.x
UR  - https://pubmed.ncbi.nlm.nih.gov/6035583/
ID  - 6035583
ER  -