From the preface: "This sixth edition has been prepared to provide an adequately broad spectrum of traditional and modern mathematical sciences data necessary for today's scientific needs, even in light of today's computer technology. The same successful format which characterized the fifth edition has been retained. Material is presented in a multisectional format, with each section containing a valuable collection of fundamental reference material - both expository and tabular in form. The format is such that existing sections can be expanded or reduced as necessary, and new sections can be developed as warranted. The sixth edition has been vastly improved by the addition of material on numerical solutions of nonlinear equations, statistical tests of hypotheses, statistical confidence intervals, and analysis of variance tables. Omissions include tables involving squares and square roots, cubes and cube roots; logarithms of the binomial coefficients; reciprocals, circumferences and areas of circles; natural trigonometric functions for angles in radius; and financial tables. It is hoped that these changes will prove to be beneficial to the users of the handbook."