Books like The Presence Process
Michael Brown
The Presence Process is 325 pages, about 5 hours 58 minutes at 250 words a minute.
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How long each takes
Ayurveda 3.2 h 
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Awareness 3.5 h 
The Edgar Cayce Remedies 5.0 h 
The Way of the Wizard 3.1 h Bar height shows length. Estimated at 250 words a minute.