Sandy Tirson (Tirson, Sandy)

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  El Hijo Unico
  by Sandy Tirson
  Softcover, Lectorum Pubns, ISBN 9685368414 (968-5368-41-4)
• 
  El Hijo Unico/the Only Child
  by Sandy Tirson
  Softcover, Lectorum Pubns Inc, ISBN 9686801537 (968-6801-53-7)
• 
  Tu Hijo: Superdotado?
  by Sandy Tirson
  Softcover, Libra Editorial, ISBN 9706061916 (970-606-191-6)