The Indefinte boundary
Subtitle: an investigation into the relationship between matter and spirit
By: Guy Lyon Playfair ; with an appendix by Hernani Guimaraes Andrade. --
Publisher: St. Martin's Press
Published: 1976-01-01
Place of publication: New York
Number of pages: 320
Subjects: Occultism.; Parapsychology -- Research.
Notes: Includes bibliographical references and index.

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