Dixon, Franklin W. <br/><br/>
The secret of the old mill / 
by Franklin W. Dixon. 
 - New York :  Grosset & Dunlap,  c1990. 
 - 174 p. :  ill ;  20 cm. 
 - Hardy boys mystery stories ;  3 .
 - Dixon, Franklin W.  Hardy boys mystery stories ;  3. .
<br/><br/> Frank and Joe unravel two mysteries, one involving a counterfeiting case and the other concerned with a national security case on which their father is working. 
<br/><br/> 4.8  Follett Library Resources.  5-8  Follett Library Resources. 
<br/><br/><label>ISBN: </label>0448089033 (trade) 0448452332 9780448089034 (trade) 9780448452333 (set : trade) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Counterfeits and counterfeiting--Juvenile fiction.<br/>National security--Juvenile fiction.<br/>Counterfeits and counterfeiting--Fiction.<br/>Mystery and detective stories.<br/>National security--Fiction.<br/>Counterfeits and counterfeiting--Fiction.<br/>Mystery fiction.<br/>National security--Fiction.
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Mystery fiction.
<br/><br/><label>Dewey Class. No.: </label>[Fic]