00587cam a22001931 4500 challengetoscien00vall CaSfIA 20250721230839.0 m o d cr|||||||||||| 711020s1966 iluab ob 00010 eng 66025843 //r85 (OCoLC)1029260182 CaSfIA TL789 .V335 001.9 Vallee, Jacques. Challenge to science; the UFO enigma, by Jacques and Janine Vallee. Chicago, Regnery [1966] 1 online resource (xvii, 268 pages illustrations, maps.) Bibliography: p. 241-258. Unidentified flying objects. ValleĢe, Janine, joint author. https://archive.org/details/challengetoscien00vall Free eBook from the Internet Archive https://openlibrary.org/books/OL5994323M Additional information and access via Open Library challengetoscien00vall ark:/13960/t19k5n249