Clarke, Arthur Charles 1917- Arthur C. Clarke's July 20, 2019 : life in the 21st century - New York, N.Y. : Macmillan Pub. Co., 1986 - 281 Subjects--Topical Terms: TECHNOLOGY AND CIVILIZATIONTWENTY-FIRST CENTURY--FORECASTSSOCIAL CHANGE LC Class. No.: CB161 / C527A