Barden. S. E. The use of an electron beam for the accurate measurement of alternat ing magnetic field strengths / S. E. Barden and K. Phillips. - Manchester : Metropolitan-Vickers Electrical Co. Ltd , 1955. - 10 p. : ill. ; 28 cm. - Research series ; No.15 . Includes bibliographical references. Subjects--Topical Terms: Electron beams--------Magnetic fields-------- Dewey Class. No.: 621.3072