PAT
DELGADO & COLIN ANDREWS
Circular
Evidence: A Detailed Investigation
of the Flattened Swirled Crops Phenomenon.
London: Bloomsbury, 1989.
190pp.
ISBN 0-7475-0357-5.
The first of the picture books about crop "circles".
It's a very good presentation of the facts
and their investigative methods.
Some investigators believe UFOs may produce
the "circles".
COLIN
ANDREWS