Webb, H. A. A mathematical tool-kit for engineers / [by] H. A. Webb and D. G. Ashwell. - 3rd ed. - London : Longmans, c1967. - viii, 138 p. : ill. ; 21 cm. Includes index Bibliographical footnotes. Subjects--Topical Terms: Mathematics. Dewey Class. No.: 510 / WEM 1967