Gravitational Manipulation of Domed Craft: UFO Propulsion DynamicsЭлектронная книгаGravitational Manipulation of Domed Craft: UFO Propulsion DynamicsавтораPaul E. PotterРейтинг: 4 из 5 звезд4/5Сохранить Gravitational Manipulation of Domed Craft: UFO Propulsion Dynamics на потом