| http://www.w3.org/ns/prov#value | - Earlier editions of this book were well received by such authorities as psychologist Stanley Krippner, a former president of the Parapsychological Association, for whom it 'reads like an intriguing detective story', and Rupert Sheldrake, who has contributed a Foreword in which he states: 'For many years I have been looking in vain for authoritative research on this intriguing subject.
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