Koll, Hilary <br/><br/>
Solve a crime / 
Hilary Koll & Steve Mills 
 - London  QED Publishing  2014 
 - 32 p.  col. ill.  26 cm. 
 - You do maths .
<br/><br/><label>ISBN: </label>9781781716892 (hb) 
<br/><br/><label>Subjects--Chronological Terms: </label><br/>Problems,exercises, etc. --Juvenile Literature