TY  - RPRT
TI  - Threshold for conditioned suppression using x-rays as the pre-aversive stimulus.
AU  - D D Morris
PY  - 1966
DO  - 10.1901/jeab.1966.9-29
UR  - https://pubmed.ncbi.nlm.nih.gov/5903956/
ID  - 5903956
ER  -