Indian railway standard specification for carbon spring steel :  for laminated springs / 
Railway Board, Ministry of Raiways, Govt. of India 
 - Lucknow :  Author,  [n.d] 
 - 4 p. ;  21 cm. 
 - Serial no M 10-71 ; .
<br/><br/><label>Dewey Class. No.: </label>625.21