Mid-century : the social implications of scientific progress ; Verbatim account of the discussions held at the Massachusetts Institute of Technology on the occasion of its Mid-century Convocation, March 31, April 1 and April 2, 1949. Edited and annotated by John Ely Burchard. Mid-century Convocation on the Social Implications of Scientific Progress, Massachusetts Institute of Technology, 1949. Burchard, John E. (John Ely), 1898- ed. Science Philosophy. Q101 .M5 1949a 504 BUM Includes index. Cambridge : Technology press, 1950. 1950. 1950 Text xx, 549 p. eng