ISBN-13: 9780415610728 / Angielski / Twarda / 2011 / 464 str.
ISBN-13: 9780415610728 / Angielski / Twarda / 2011 / 464 str.
This book, first published in 1962, is based on a series of lectures first given at Cambridge University in 1959 and 1960, dealing with psychical research, i.e. the scientific investigation of ostensibly paranormal phenomena.