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Robert L. Campbell

American psychologist

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Books

  • Campbell, R. L., & Bickhard, M. H. (1986). Knowing levels and developmental stages. Basel, Switzerland: Karger.
  • Piaget, J. (2001). Studies in reflecting abstraction (R. L. Campbell, Ed. and Trans.). Hove: Psychology Press.
  • The Earthly Recordings of Sun Ra, 2nd edition, with Chris Trent, Cadence Jazz Books 2000

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