TY  - RPRT
TI  - Preferences for opioids by the weight pulling method in rats.
AU  - T Suzuki
AU  - Y Masukawa
AU  - T Kawai
AU  - S Yanaura
PY  - 1990
DO  - 10.1016/0091-3057(90)90178-k
UR  - https://pubmed.ncbi.nlm.nih.gov/2320650/
ID  - 2320650
ER  -