Indian Standards Institution <br/><br/>
Indian standard specification for temperature control devices for quartz crystal units (heating type) part I general requirements and tests  piezo-electric and magnetic materials sectional committee, ETDC 41 

 - Indian Standards Institution, New Delhi  1970 
 - 24 
<br/><br/><label>Dewey Class. No.: </label>IS:5575(pt.I)-1970 548.85 I.S.I.