(Q43726983)
Statements
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Voucher-based reinforcement of opiate plus cocaine abstinence in treatment-resistant methadone patients: effects of reinforcer magnitude (English)
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Dallery J
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Silverman K
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Chutuape MA
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Bigelow GE
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Stitzer ML
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1 August 2001
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9
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3
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317-325
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Identifiers
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