Indian Standards Institution <br/><br/>
Indian standard reference tables for platinum/30 percent rhodium - platinum/6 percent rhodium thermocouples  electrical instruments sectional committee, ETDC 48 

 - Indian Standards Institution, New Delhi  1974 
 - 18 
<br/><br/><label>Dewey Class. No.: </label>IS:6720-1972 536.52 I.S.I.