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Books by Dr. Thomas Gordon

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Parent Effectiveness Training: The Proven Program for Raising Responsible Children
🇩🇪 Germany
Parent Effectiveness Training: The Proven Program for Raisi…
By: Dr. Thomas Gordon
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Teacher Effectiveness Training: The Program Proven to Help Teachers Bring Out the Best in Students of All Ages
🇫🇷 France
Teacher Effectiveness Training: The Program Proven to Help …
By: Dr. Thomas Gordon
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