Mantle, Mr. Philip books & textbook
Russia's USO Secrets: Unidentified Submersible Objects in Russian and International Waters
Stonehill, Mr. Paul Mantle, Mr. Philip
CreateSpace Independent Publishing Platform /2016-04-22 Paperback / 194 Pages
isbn-10: 1532898401 / isbn-13: 9781532898402
1991 6th International UFO Congress Proceedings: UFOs: The Global View
Independently published /2017-08-07 Paperback / 97 Pages
isbn-10: 1522042490 / isbn-13: 9781522042495
