Holm, Ragnar. <br/><br/>
Electric contacts :  theory and application / 
Ragnar Holm. 
 - 4th ed. 
 - Berlin :  Springer-Verlag,  1967. 
 - xv, 482 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>3540038752 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric contacts.