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Raphael Colman

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dynamic growth of the thinking processes in the child & the teenager
The Dynamic Growth of the Thinking Processes in the Child and the Teenager
Mental Exercises to Develop Thinking Ability
Maximal Exercises to Promote Mental Agility and the Power of Dynamic Thinking
How to Develop the Learning Powers of the Child and of the Teenager
How to Develop the Learning Powers of the Child and of the Teenager