Bergmann's L5 Orbitat, Bk 5 — George G. Pinneo

Bergmann's L5 Orbitat describes how the H-Team builds an orbital habitat at the L5 Lagrange Point behind the Moon using a new technique. Bergmann's Orbitat will be spun up to furnish a 0.5 G loading so that humans will not be debilitated by low-G. BVI will offer orbital tours, rooms and a restaurant as they begin preparation to build the first of 2 habitats on the Lunar surface. The next step outward will be to Mars, the real prize! They'll build a permanent colony on Mars!