Holm, Ragnar.
Electric Contacts : Theory and Application / Holm Ragnar. - 4 edition. - Berlin : Springer-Verlag, 1967. - XV, 482 s.; 25 cm.
Electric Contacts : Theory and Application / Holm Ragnar. - 4 edition. - Berlin : Springer-Verlag, 1967. - XV, 482 s.; 25 cm.