หนังสือจาก David McKay

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  Critical Thinking Skills: Tools to Develop your Skills in Problem Solving and Reasoning Improve your Thinking Skills with this Guide (For Kids and Adults)David McKay
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  Social Anxiety Disorder: The Best Solution for Your Kids for Overcoming Shyness that Holds You Back in Your Everyday Life. (Complete Guide for Women, Men, and Teens)David McKay
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  Critical Thinking: The Best Beginner’s Guide that Gives You the Tools for Improve your Skills of Problem Solving, Logic and the Basics of Human Psychology (for Women, Men and Kids)David McKay