Waltham, Antony Clive. <br/><br/>
The limestones and caves of northwest England / 
compiled and edited by A. C. Waltham, assisted by M. M. Sweeting. 
 - Newton Abbot :  David & Charles for The British Cave Research Association,  1974. 
 - 477 p. :  ill. ;  23 cm. 
<br/><br/>Bibliography: p. 453-467. 
<br/><br/><label>ISBN: </label>0715361813 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Caves--England, North West.<br/>Karst--England, North West.