Light shelfwear to edges and covers. No DJ. DJ flap removed and glued to front inside board. Pages tight and clean. Library discard with usual marks and attachments. Pocket and ffep removed. 159 pages. HardCover Binding. Year: 1961. ISBN: 0. This challenging book deals with some of the ways in which men look to science to provide additional resources in a world that is becoming more and more crowded. It is written to encourage searching thought by today's young people on one of the most urgent and complex problems facing our world.