Bertha's secret battle 
Berthas secret battle 
 -  "32 p. : col. ill., ; 20 cm. ; pbk." 
 - Oxford  Oxford University Press  2005 
<br/><br/><label>ISBN: </label>9780199179756 
<br/><br/><label>Dewey Class. No.: </label>823.0083 COL  / 2.823.0083COL