Elements of probability / by H. Levy and L. Roth. Levy, H. (Hyman), 1889- Roth, L. (Leonard), author. Probabilities. 519.1 LEE "First published 1936; reprinted ... from corrected sheets of the first edition." Oxford : Clarendon Press, 1947. 1947. 1947 Text x, 200 p. ; eng