Essays in conceptual analysis / H. Brotman, E. Daitz, Antony Flew, Peter Herbst, John Hospers, D. F. Pears, J. J. C. Smart, P. F. Strawson, Stephen Toulmin, J. O. Urmson and G. J. Warnock ; selected and edited by Antony Flew.    London ; Melnourne ; Toronto : Macmillian ; New York : St. Martin´s Press, 1956 . ix, 264 stran