Security for all and free enterprise : a summary of the social philosophy / Josef Popper-Lynkeus ; edited and with notes by Henry I. Wacthtel ; with an introduction by Albert Einstein. Popper-Lynkeus, Josef Wachtel, Henry I. Sociology. 300.1 POS Includes index. Bibliography: p. 157-158 New York : Philosophical Library, c1955. c1955. 1955 Text xi, 162 p. ; eng