State electrification : a symposium held by the Insititute of Phy sics in London on 25, 26 and 27 March, 1953. - London , 1953. - iv, 103 p. : ill. ; 28 cm. - British journal of applied physics ; Supplement no. 2 . Includes bibliographical references. Subjects--Topical Terms: Electrostatics.Electric machines. Dewey Class. No.: 537.21