Seal, Hilary L. Stochastic theory of a risk business / Hilary L. Seal. - New York : Wiley, c1969. - xiii, 210 p. ; 23 cm. Includes bibliographies. ISBN: 0471769002 Subjects--Topical Terms: Risk.Risk (Insurance)Probabilities. Dewey Class. No.: 368 / SES 1969