00395nam a2200145Ia 4500 230917s9999||||xx |||||||||||||| ||und|| 141512 MAIN English 120 P817L Popper, Karl R Conjectures and refutations: The growth of scientific knowledge London Routledge & Kegan Paul 1978 431 p. BK 0 0 0 120_000000000000000_P817L 0 325494 MAIN MAIN 2010-03-02 0 120 P817L 52988 2023-09-17 21:59:06 2023-09-17 BK 195164 195164