TY  - RPRT
TI  - Schedule-controlled behavior in the morphine-dependent and post-dependent rat.
AU  - L S Brady
AU  - S G Holtzman
PY  - 1980
DO  - 10.1007/bf00432364
UR  - https://pubmed.ncbi.nlm.nih.gov/6775328/
ID  - 6775328
ER  -