Mary Brown <br/><br/>
Demonstration techniques / 
by Mary Brown Allgood 
 - New York :  Prentice hall,  1959. 
 - 147p. : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Techniques
<br/><br/><label>Dewey Class. No.: </label>641.07  / ALL.D