Armstrong, D. M. 1926-2014. What is a law of nature? / D.M. Armstrong. - 1st. papaerback ed. - Cambridge [Cambridgeshire] ; New York : Cambridge University Press, 1985. - x, 180 p. ; 22 cm. - Cambridge studies in philosophy . Includes index. Bibliography: p. 174-176. ISBN: 0521253438 [hrd] 052131481X Subjects--Topical Terms: Philosophy of nature.Law (Philosophy) Dewey Class. No.: 171.2 / ARW