Effects of chronic methadone treatment on cocaine- and food-maintained responding under second-order, progressive-ratio and concurrent-choice schedules in rhesus monkeys
| Autor: | Negus, S.Stevens, Mello, Nancy K |
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| Zdroj: | In Drug and Alcohol Dependence 2004 74(3):297-309 |
| Databáze: | ScienceDirect |
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