Invisible Ink: Yes & Know® Book 7-77

The Invisible Ink pen reveals the invisibly printed answers. See how much you know with hundreds of interesting questions on dozens of different topics. Have fun competing with the invisible opponent as you play games by yourself. 
Check out all 6 books in the Yes & Know® Invisible Ink Book series.  

Book Includes: 
    •  Invisible Ink Pen
    •  48 pages of fun games and trivia 
 
Ages 7+                                            
 
Book Size: 6" x 11"
 
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UPC: 0 77259 01071 5
ISBN: 1-56297-005-4
Product Code: YK7

               
Invisible Ink: Yes & Know<small><sup>®</sup></small> Book 7-77

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Invisible Ink: Yes & Know<small><sup>®</sup></small> Book 7-77