The Physics and Metaphysics of Unidentified Flying Objects: Reported UFO's cannot be under extraterrestrial control if the laws of physics are valid
Markowitz, W.Volume:
157
Year:
1967
Language:
english
Pages:
6
DOI:
10.1126/science.157.3794.1274
File:
PDF, 1.92 MB
english, 1967