Documents:

Probably the most exhaustive and founded book for the serious UFO-researcher. This fully illustrated handbook covers almost every aspect of modern UFO-investigation.

300 pages, 61 photos + drawings Paper $ 10.95, bound $ 22.95, (postage incl.)

Available from:
Nelson Hall Publishers,
111 North Canal Street,
Chicago, Illinois 60606, USA.

"A comprehensive, scholarly presentation of the perceptual problems involved in separating UFO fact from fancy. Highly recommended for the serious UFO investigator."
- J. Allen Hynek, Center for UFO Studies, Evanston, Illinois.