TY  - RPRT
TI  - Lever attacking by rats during free-operant avoidance.
AU  - J J Pear
AU  - J E Moody
AU  - M A Persinger
PY  - 1972
DO  - 10.1901/jeab.1972.18-517
UR  - https://pubmed.ncbi.nlm.nih.gov/16811641/
ID  - 16811641
ER  -