New York, Putnam, 1966. First edition, first impression. Hardback. A near fine copy. A moon-based settlement rebels against Earth's control. Winner of the Hugo award (though perhaps famous for establishing the phrase There Ain't No Such Thing as a Free Lunch). Jacket a little chipped and worn. But largely in nice shape. Seller's sticker to jacket rear. A nice copy. Original receipt laid in, from 1966. [9749, Hyraxia Books].