Keene, Carolyn. <br/><br/>
The clue in the diary.  [electronic resource]  

 - New York,  Grosset & Dunlap  [1962] 
 - 174 p.  illus.  20 cm. 
 - Nancy Drew mystery stories .
 - Keene, Carolyn.  Nancy Drew mystery stories. .
<br/><br/> An anonymous diary is a mystery with handwriting that is difficult to decipher.  It is filled with technical drawings and chemical formulas.  Was the destructive explosion an accident or an act of revenge? 
<br/><br/><label>ISBN: </label>0448095076 9780448095073 
<br/><br/><label>LCCN: </label>62052095  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Drew, Nancy (Fictitious character)--Juvenile fiction.
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Mystery fiction.<br/>Mystery and detective fiction--1962.
<br/><br/><label>LC Class. No.: </label>PZ7.K23  / Nan no. 7 1962