Underwood, R. E. The elements of actuarial science/ R. E. Underwood - 4th ed. - London: New York, Sir I. Pitman & Sons, Ltd., c1948. - viii, 166 p.: tables, 19 cm. English LCCN: 23009023 Subjects--Topical Terms: Actuarial science. LC Class. No.: HG8781 / .U5 Dewey Class. No.: 368.01/UNE