The 1981 discovery of mysterious and beautiful circular depressions in fields of crops in southern Britain has initiated a full and scientific investigation by the authors, who are founder members of the Circles Phenomenon Research Group. They have interviewed farmers and witnesses, made location visits, taken photographs and measurements and tested theories. Reports of further anomolous occurrences, mysterious coincidences possibly connnected with the circles and related observations from other countries are also included in the text.
- ISBN10 0933999968
- ISBN13 9780933999961
- Publish Date 31 December 1991 (first published 13 July 1989)
- Publish Status Out of Print
- Out of Print 30 November 2011
- Publish Country US
- Imprint Phanes Press,U.S.
- Format Hardcover
- Language English