Data Book 1967/68 [volume 2] Siferrit and Sirufer material : transformers, electronic circuits blocks / - [Munich] : Siemens Aktiengesellschaft, [1968?] - 567 p. : il., fotos, gráfs., tablas ; 21 cm. Subjects--Topical Terms: CIRCUITOS ELECTRONICOS Subjects--Index Terms: TRASFORMADORES Universal Decimal Class. No.: 538.2