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Her purpose here is to discuss and illustrate the four types of brain waves--beta, alpha, theta, and delta--with emphasis on what they do, how they work together, and whether we can use their power.--Booklist.
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Her purpose here is to discuss and illustrate the four types of brain waves--beta, alpha, theta, and delta--with emphasis on what they do, how they work together, and whether we can use their power.--Booklist.
Reviews