17 books • 3 series
Wind Tunnels of NASA - History of Their Contribution to Flight Science from the Wright Brothers to the Shuttle, Current NASA Facilities for Aircraft and Spacecraft Tests
The Interplanetary Pioneers
NASA Sounding Rockets, 1958-1968 (The NASA Historical Report)
Archeological Anomalies
Ancient Infrastructure
Biological Anomalies--Birds
H Andbook of Unusual Natural Phenomena
Biological Anomalies--Humans
Science Frontiers
Handbook of Unusual Natural Phenomena
Lightning, Auroras, Nocturnal Lights, and Related Luminous Phenomena (Catalog of Geophysical Anomalies)
The Unexplained
Strange Artifacts
Strange Planet
Strange Phenomena (Strange Phenomena, G2)
Human Factors Applications in Teleoperator Design and Operation
Some Mysteries of the Universe