Dixon, F.W <br/><br/>
The secret of skull mountain 

 - Great Britain;  Collins sons and Co.Ltd  1977 
 - 156 pages;  illustration;  18 cm. 
 - Hardy boys mystery stories , 40 .
<br/><br/> The Hardys team up with a team of engineers to discover how water is disappearing from Bayport's new reservoir near Skull Mountain. 
<br/><br/><label>ISBN: </label>9780001605411 
<br/><br/><label>Dewey Class. No.: </label>823  / DIX-T