Coldwell, John <br/><br/>
Bertha's secret battle 
John Coldwell 
 - Oxford  Oxford University Press  2005 
 - 32 p. : ill. ; col 
<br/><br/><label>ISBN: </label>9780199179756 
<br/><br/><label>Dewey Class. No.: </label>823.0083 COL