00344nam a2200145Ia 4500 230917s9999||||xx |||||||||||||| ||und|| 156385 MAIN English 120 P817C Popper, Karl Conjectures and refutations London Routledge 1963 582 p. BK 0 0 0 120_000000000000000_P817C 0 256059 MAIN MAIN 2010-05-20 0 120 P817C 281067 2023-09-17 21:38:09 2023-09-17 BK 154611 154611