DANIELS, RICHARD W. APPROXIMATION METHODS FOR ELECTRONIC FILTER DESIGN - S.E. - Estados Unidos MCGRAW-HILL 1974 NEW YORK - 388 ISBN: 0070153086 LCCN: 84929 Subjects--Topical Terms: ELECTRONICAFILTROS ELECTRICOSFILTROS-TRANSMISION Dewey Class. No.: 621.381532