Indian Standards Institution <br/><br/>
Indian standard dimensions of pot-cores made of ferromagnetic oxides and associated parts  piezo-electric and magnetic materials sectional committee, ETDC 41 

 - Indian Standards Institution, New Delhi  1972 
 - 12 
<br/><br/><label>Dewey Class. No.: </label>IS:6235-1971 621.3 I.S.I.