Littlefield, David J., comp <br/><br/>
Twentieth century interpretation of The Frogs :  a collection of critical essays / 
edited by David J. Littlefield. 
 - Englewood Cliffs, NJ :  Prentice-Hall,  c1968. 
 - viii, 118p. 
 - Twentieth century interpretations .
<br/><br/> Includes bibliography