"Well done, secret seven " 
Well done secret seven 
 -  108 p. : ill. ; 18 cm.; pbk. 
 - London  Hodder Children's Books  2015 
<br/><br/><label>ISBN: </label>9780340893098 
<br/><br/><label>Dewey Class. No.: </label>823.0083 BLY  / 22.823.0083 BLY