LEADER 00000nam 2200205 a 4500 001 0899942 007 t 008 000606 0 1990 000 eng 020 1855060000 040 BLAISE 050 4 B 3405 P8 W9 100 1 Popper, Karl R.|q(Karl Raimund),|d1902-1994. 245 02 A world of propensities. 260 Bristol :|bThoemmes,|c1990. 300 51p. 946 6XX absent
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