Greenburg, Dan <br/><br/>
The Zack files : now you see me... now you don't 
by Dan Greenburg 
 - New York  Scholastic Inc.  1998 
 - 57 p. 
<br/><br/> When Zack accidentally drinks the invisible ink that is one of Spencer's experiments, he worries about missing his only chance to get his picture in the paper, if the new flavor he and Spencer invented wins the local Len and Larry's Ice Cream contest. 
<br/><br/><label>ISBN: </label>0439161428 
<br/><br/><label>Subjects--Index Terms: </label>Science