De Santillana, Giorgio 1902- The origins of scientific thought / from Anaximander to Proclus, 600 B.C. to 300 A.D. - Chicago : University of Chicago Press, 1961. - 320 p. : diagrs. ; 23 cm. - History of scientific thought Bibliography: p. [314]-317. Subjects--Topical Terms: Science, Ancient Dewey Class. No.: 509.3