TY  - RPRT
TI  - Drug discrimination under a concurrent schedule.
AU  - S H Snodgrass
AU  - D E McMillan
PY  - 1996
DO  - 10.1901/jeab.1996.65-495
UR  - https://pubmed.ncbi.nlm.nih.gov/8636660/
ID  - 8636660
ER  -