Buckminster Fuller (1992). “Cosmography: A Posthumous Scenario for the Future of Humanity: A Posthumous Scenario for the Future of Humanity”, p.1, The Estate of R. Buckminster Fuller
Buckminster Fuller (1992). “Cosmography: A Posthumous Scenario for the Future of Humanity: A Posthumous Scenario for the Future of Humanity”, p.27, The Estate of R. Buckminster Fuller