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Atualizado em 13/05/2026 · De todos da iMusic
![Cover for Ragnar Holm · Electric Contacts (Paperback Book) [4th Ed. Softcover of Orig. Ed. 1967 edition] (2010)](https://imusic.b-cdn.net/images/item/original/083/9783642057083.jpg?ragnar-holm-2010-electric-contacts-paperback-book&class=scaled&v=1498596442)
![Cover for Ragnar Holm · Electric Contacts: Theory and Application (Hardcover Book) [4 Rev edition] (1967)](https://imusic.b-cdn.net/images/item/original/757/9783540038757.jpg?ragnar-holm-1967-electric-contacts-theory-and-application-hardcover-book&class=scaled&v=1461511986)
![Cover for Ragnar Holm · Elektrische Kontakte / Electric Contacts Handbook (Paperback Book) [3rd 3. Aufl. 1958. Softcover Reprint of the Origin edition] (1958)](https://imusic.b-cdn.net/images/item/original/908/9783662237908.jpg?ragnar-holm-1958-elektrische-kontakte-electric-contacts-handbook-paperback-book&class=scaled&v=1461511983)
![Cover for Ragnar Holm · Die Technische Physik Der Elektrischen Kontakte - Technische Physik in Einzeldarstellungen (Paperback Book) [1941 edition] (1941)](https://imusic.b-cdn.net/images/item/original/229/9783662422229.jpg?ragnar-holm-1941-die-technische-physik-der-elektrischen-kontakte-technische-physik-in-einzeldarstellungen-paperback-book&class=scaled&v=1408605139)