TY  - RPRT
TI  - Differences between strains of rats in avoidance conditioning without an explicit warning stimulus.
AU  - V H SCHAEFER
PY  - 1959
DO  - 10.1037/h0040058
UR  - https://pubmed.ncbi.nlm.nih.gov/13641481/
ID  - 13641481
ER  -