Ord, Harry. <br/><br/>
Engineering drawing and materials for mechanical engineering technicians. 

 - 4th ed. 
 - London :  Hodder & Stoughton,  [1974, 1980] 
<br/><br/>v. 1. (In SI Units). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mechanical drawing.<br/>Materials.