TY  - RPRT
TI  - Learning principles.
AU  - S Spreat
AU  - S R Spreat
PY  - 1982
DO  - 10.1016/s0195-5616(82)50104-0
UR  - https://pubmed.ncbi.nlm.nih.gov/6131554/
ID  - 6131554
ER  -