Bland, D. R. Vibrating strings : an introduction to the wave equation / by D.R. Bland. - London : Routledge & Kegan Paul, [1960]. - 95 p. : ill. ; 19 cm. - Library of mathematics . - Library of mathematics . Includes bibliographical references. Subjects--Topical Terms: Vibration.Waves.Wave equation. Dewey Class. No.: 534.1 / BLV 1960