Cassell, Richard A.,  1921- <br/><br/>
What is the play? / 
By Richard A. Cassell and Henry Knepler 
 - Glenview, Illinois :  Scott,  1967 
 - 751 p. :  ill., ports. ;  23 cm. 
<br/><br/> Plays and essays. 
<br/><br/>Bibliography: p. 741-751. 
<br/><br/><label>LCCN: </label>67-013095 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Drama<br/>Theater