Middleton, John,  1942- <br/><br/>
The underground atlas :  a gazetteer of the world's cave regions / 
by John Middleton & Tony Waltham 
 - London :  Robert Hale,  1986 
 - 239 p., [24] p. of plates :  ill. ;  25 cm. 
<br/><br/>Bibliography: p. 234-235 
<br/><br/><label>ISBN: </label>0709027982 :  ? 14.95 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Caves<br/>Landforms
<br/><br/><label>Dewey Class. No.: </label>551.44