cam a22 4500 215863909 CHVBK 20200926131952.0 940826s1990 xxk|||||||||| 00 |eng d 0-14-013547-2 (RERO)1900363 RERO geulph s1ph rero Ayer Alfred Jules (RERO)A002954619 cre The problem of knowledge A.J. Ayer [Repr.] London New York [etc.] Penguin Books 1990 223 p. 20 cm txt rdacontent n rdamedia nc rdacarrier Penguin. Philosophy Épistémologie (RERO)A021003072 rero Penguin books (RERO)000212309 BK020000 XK020000 XK020000 RERO RE61043 RE61043 RE610430001 O 2 AYE Pro BFLA 78306 RERO 100 1- Ayer Alfred Jules (RERO)A002954619 cre RERO 490 1- Penguin. Philosophy RERO 830 -- Penguin books (RERO)000212309 SWISSBIB 146638905