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

 - Indian Standards Institution, New Delhi  1975 
 - 25 
<br/><br/><label>Dewey Class. No.: </label>IS:4794(pt.I)-1968 621.317 I.S.I.