Brain teasers :  30 insanely baffling puzzles plus how to solve the metal mysteries 
 Professor Murphy's Emporium of entertainment :   brain teasers 30 insanely baffling puzzles  

 - 16 pages;  illustrations,  14x15 cm.+ 6 sets of metal puzzles 
<br/><br/><label>ISBN: </label>9781472393555 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Puzzles--Juvenile literature
<br/><br/><label>Dewey Class. No.: </label>793.73