These audiobooks titled "Positive Changes Hypnosis MIND MASTERY w/HYPNOSIS and SELF MASTERY THROUGH SELF -HYNOSIS. On Cassette Tape" by Patrick K. Porter is the perfect tool to achieve relaxation and improve one's mental health. The book is written in naturalism style and is intended for both young adults and adults. The audiobook is narrated by the author himself and is available in English language.

The cassette format makes it easy to carry around and use whenever needed. The book covers topics related to relaxation and is part of the genre of health, treatments & medicine. The publication year for this audiobooks cassettes is 1998 and 2000 and it is published by Positive Changes.

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