00509nam a22001937a 4500 BD-DhUL 20161114085954.0 161114s1979 enk |||| |||| 001 0 eng d BD-DhUL BD-DhUL 121 AYE Ayer, A. J. Foundation of empirical knowledge / A. J. Ayer London : Macmillan. 1979. x, 176p. ; 21 cm. GBP 22.65 Includes index. Theory of knowledge. ddc BK 122841 122841