Indian Standards Institution <br/><br/>
Indian standard specification for toggle switches part I general requirements and tests  electromechanical components for electronic equipment sectional committee, ETDC 37 

 - Indian Standards Institution, New Delhi  1975 
 - 22 
<br/><br/><label>Dewey Class. No.: </label>IS:3452(pt.I)-1966 621.317 I.S.I.