00426cam a2200109 a 4500020002100000082001300021100002000034245004000054260003700094300003700131650014800168  a0872204537 (pbk)00a501bCHA1 aChalmers, A. F.10aWhat is this thing called science?   aIndianapolis bHackett Pubc1999  axxii, 266 p. b: ill. c; 22 cm. 0aScienceaPhilosophyvObservationvDeriving theoriesvExperimentvFalsificationvKhun's paradigmvMethodological changesvMethodological changes