00846nam0-22002771i-450-990001004500403321000100450FED01000100450(Aleph)000100450FED0100010045020000920d1971----km-y0itay50------baengObservation and explanationA Guide to Philosophy of ScienceNorwood Russell Hansonpreface de Stephen ToulminNew YorkHarper Torchbooks1971Fondamenti delle scienze fisiche e naturali501Hanson,Norwood Russell45102Toulmin,Stephen EdelstonITUNINARICAUNIMARCBK9900010045004033214-1378719FI1FI1Observation and explanation354739UNINAING01