Engineering drawing practice, part1  : general principles 

 - London:  British Standards Institution,  1972. 
 - Various pages 
<br/><br/> PB 
<br/><br/><br/>Eng 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering drawing
<br/><br/><label>Dewey Class. No.: </label>604.2  / ENG