Durr, William. K. <br/><br/>
Teacher's guide  :part-2 
William. K. Dur 
 - Boston  Houghton Mifflin  1989 
 - Various page 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Drawing --Study and teaching<br/>Mechanical drawing
<br/><br/><label>Dewey Class. No.: </label>428  / DUT