Hardback with dustjacket, dust jacket's upper front right corner is torn and taped by pervious owner.
First edition, very good condition.
The late Robert A. Monroe founded the Monroe Institute for Applied Sciences, he was interested in altered states of consciousness and is noted for popularizing the term "out-of-body experiences" from his earlier book, "Journeys Out of hte Body."
This book is on Hemi-Sync, a process he claimed
enables travel through time and space