I believe this story was the inspiration behind the recent comedy sci-fi film, Iron Sky, about Nazis building a base on the moon to launch an attack against the allies on Earth. Only, in the film, they spent 70 years preparing and it’s modern day. Anyway, a decent juvenile novel, not very interesting but it is still readable for a 1947 novel.
THE MANDATE OF EARTH
"Present day science fiction novel proposes a futurist perspective on colonizing the solar system."
THE LEGACY OF EARTH
"Humanity is on the verge of explosive growth but there's a threat that may spell disaster for Earth...."
BEGINNING GAME PROGRAMMING, 4TH ED
"Learn the ropes of game development with Visual C++ 2013 and DirectX 9 and proven techniques with solid example games."
VIDEO GAME PROGRAMMING FOR KIDS, 2ND ED
"Learn to program your own games using the classic BASIC language and simple games."