Blyton , Enid  <br/><br/>
The mystery of the vanished prince : 

 - Egmont :   London ;  1951. 
 - 249 p ; 21 cm .  01 
 - 2025-06-09 
<br/><br/><label>ISBN: </label>9781405272339 
<br/><br/><label>Nat. Bib. No.: </label>0011304 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>BLY        
<br/><br/><label>Universal Decimal Class. No.: </label>823