Watanabe, Kensuke. <br/><br/>
Sekaiichi yasashii mondai kaiketsu no jugyo. 

 - Tokyo :  Daiyamondosha,  2007. 
 - 117 pages ;  19 cm. 
<br/><br/><label>ISBN: </label>9784478000496 4478000492 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Problem solving.
<br/><br/><label>LC Class. No.: </label>BF449  / .W37