Powell, Richard L. <br/><br/>
Caves of Indiana / 
by Richard L. Powell. 
 - Bloomington :  Indiana Dept. of Conservation,  1961. 
 - 127 p. :  ill., maps (1 fold. in pocket) ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 117-122. 
<br/><br/><label>LCCN: </label>gs 62000218  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Caves--Indiana.
<br/><br/><label>LC Class. No.: </label>QE109  / .A34 no. 8