Russ Hudson (Hudson, Russ)

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  Discovering Your Personality Type: The Essential Introduction to the Enneagram
  

  by Russ Hudson , Don Richard Riso

  ISBN 061821903X (0-618-21903-X)
  Softcover, Houghton Mifflin

  
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  Personality Types: Using the Enneagram for Self-Discovery
  

  by Russ Hudson , Don Richard Riso

  ISBN 0395798671 (0-395-79867-1)
  Softcover, Houghton Mifflin

  
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  The Riso-Hudson Enneagram Type Indicator (Rheti, Version 2.5)
  

  by Russ Hudson , Don Richard Riso

  ISBN 0970382405 (0-9703824-0-5)
  Softcover, Enneagram Inst

  
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  Understanding the Enneagram: The Practical Guide to Personality Types
  

  by Russ Hudson , Don Richard Riso

  ISBN 0618004157 (0-618-00415-7)
  Softcover, Houghton Mifflin

  
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  The Wisdom of the Enneagram: The Complete Guide to Psychological and Spiritual Growth for the Nine Personality Types
  

  by Russ Hudson , Don Richard Riso

  ISBN 0553378201 (0-553-37820-1)
  Softcover, Bantam Dell Pub Group

  
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