Technical drawing book 2 
Mayock F.B 
 - Metric edition. 
 - London,  Heinemann.  1971. 
 - 30p. 
<br/><br/><label>ISBN: </label>0-435-75589-7 
<br/><br/><label>LC Class. No.: </label>T 353 .  / .M39 1971