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The second edition of David W. Group's Encyclopedia of Mind Enhancing Foods, Drugs and Nutritional Substances is expanded and contains even more information on mind-altering drugs, foods and plants. The book jumps from 195 pages of content to 366 pages in this second edition. If the first edition is used as a reference book, I would strongly suggest purchasing the updated version. Although this book is not intended to be used as a medical reference to self-prescribe substances, as a disclaimer at the beginning notes (although I suspect people may be using it for just that purpose), it does cover...
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