Ghost investigations

Temperature

EMF

Environment

5. Recommended reading

Gauld, A. (1983). Mediumship & Survival: A century of investigations.

Hines, T. (2002). Pseudoscience and the Paranormal: A critical examination of the evidence. (highly skeptical)

Tyrell, G. N. M. (1938). Apparitions. (reprinted 1973).

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