Life insurance mathematics /

by Larson, Robert E (Robert Earl), 1916-, Larson, Robert E (Robert Earl), 1916-, Gaumnitz, Erwin Alfred
Published 1957

Life insurance mathematics

by Larson, Robert Earl, 1916-
Published 1951

Social security and life insurance /

by Cranefield, Paul F (Paul Frederic), 1925-, Cranefield, Paul F (Paul Frederic), 1925-, Cranefield, Paul F, Gaumnitz, Erwin A., Taylor, W. Bayard (William Bayard)
Published 1940