FARR, Martyn <br/><br/>
The darkness beckons.  The history and development of cave diving 

 - London  Diadem  1980 
 - 207p., 16 col. plates, illus., maps, bibl.  21xm. 
<br/><br/> 2nd ed. acl 25572 
<br/><br/><label>ISBN: </label>906371503 
<br/><br/><label>Dewey Class. No.: </label>15.3