Cetron, Marvin J. Encounters with the future : a forecast of life into the 21st century / Marvin Cetron and Thomas O'Toole. - New York : McGraw-Hill, c1982. - 308 p. ; 24 cm. Includes index. ISBN: 007010347X LCCN: 81020938 Subjects--Topical Terms: Twenty-first century--Forecasts. LC Class. No.: CB161 / .C4 1982 Dewey Class. No.: 303.482 / CEE 1982