Stephen T. Higgins (Higgins, Stephen T.)

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  Cocaine Abuse: Behavior, Pharmacology, and Clinical Applications
  by Stephen T. Higgins, Jonathan L. Katz
  Hardcover, Academic Pr, ISBN 0123473608 (0-12-347360-8)
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  Contingency Management in Substance Abuse Treatment
  by Kenneth Silverman, Stephen T. Higgins, Sarah H. Heil
  Hardcover, Guilford Pubn, ISBN 1593855710 (1-59385-571-0)
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  Motivating Behavior Change Among Illicit-Drug Abusers: Research on Contingency Management Interventions
  by Kenneth Silverman, Stephen T. Higgins
  Hardcover, Amer Psychological Assn, ISBN 1557985707 (1-55798-570-7)