Spencer, Henry Cecil <br/><br/>
Engineering graphics problems, series 1 

 - London  The Macmillan Company  1969 
 - 106 p.  Illustration 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ENGINEERING DROWING
<br/><br/><label>Universal Decimal Class. No.: </label>621.7  / SPE