(Q44934092)
Statements
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Effects of chronic methadone treatment on cocaine- and food-maintained responding under second-order, progressive-ratio and concurrent-choice schedules in rhesus monkeys (English)
1 reference
S Stevens Negus
1 reference
Nancy K Mello
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1 June 2004
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1 reference
74
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3
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297-309
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Identifiers
1 reference
1 reference