TY  - RPRT
TI  - Double-alternation learning by retardates.
AU  - D R Brown
AU  - A M Schrier
PY  - 1969
DO  - 10.2466/pms.1969.28.2.451
UR  - https://pubmed.ncbi.nlm.nih.gov/4979527/
ID  - 4979527
ER  -