Cramér, Harald, 1893-1985. The elements of probability theory and some of its applications / Harald Cramer. - New York, Wiley [1955] - 281 p. illus. 24 cm. LCCN: 55000945 Subjects--Topical Terms: Probabilities. LC Class. No.: QA273 / .C843 Dewey Class. No.: 519.2 / CRE 1955