Bertha's Secret Battle 
Berthas Secret Battle 
 -  48 p. : ill. ; 22 cm.; pbk. 
 - Oxford   Oxford University Press  1998 
<br/><br/><label>ISBN: </label>9780199187867 
<br/><br/><label>Dewey Class. No.: </label>372.677049 COL  / 2.372.677049COL