Pringle, B. <br/><br/>
Chalk illustration :  a manual for technical teachers / 
by B. Pringle. 
 - Oxford :  Pergamon,  1966. 
 - vii, [70] p. :  ill. ;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Blackboard drawing.<br/>Mechanical drawing.