Specification for porcelain insulators for telegraph and telephone lines (third revision) (second reprint May 1990) 

 - New Delhi  Buraeu of Indian standards, New Delhi  1976 
 - 17p. ; 21 cm. 
<br/><br/> Indian Standard No. : IS 283 
<br/><br/><label>Subjects--Index Terms: </label>IS 283