Blyton, Enid, <br/><br/>
The mystery of the secret room / 
Enid Blyton. 
 - 218 pages ;  20 cm. 
 - The mystery series ;  3 .
<br/><br/> Originally published: London: Methuen, 1945. 
<br/><br/><label>ISBN: </label>9781444960341 
<br/><br/><label>LCCN: </label>2023285117 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Five Find-Outers (Fictitious characters)--Juvenile fiction.<br/>Five Find-Outers (Fictitious characters)
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Detective and mystery stories.<br/>Children's stories.<br/>Detective and mystery fiction.<br/>Fiction.<br/>Juvenile works.<br/>Fiction.
<br/><br/><label>LC Class. No.: </label>PZ7.B629  / Mzl 2021 
<br/><br/><label>Dewey Class. No.: </label>[Fic] 823.912