Levy, Elizabeth,  1942-, <br/><br/>
The schoolyard mystery / 
by Elizabeth Levy ; illustrated by Denise Brunkus. 
 - 1 volume (unpaged) :  color illustrations, color maps ;  24 cm. 
 - Advanced reader! ;  Level 4 Invisible Inc. .
 - Levy, Elizabeth,  1942-  Invisible Inc. ;  #1. .
<br/><br/> Chip, an invisible boy, and his friends solve the mystery of who took the school ball from the playground. 
<br/><br/> "Grades 2 & 4."--Cover. 
<br/><br/><label>ISBN: </label>9780590474832 0590474839 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Schools--Fiction.<br/>Mystery and detective stories.
<br/><br/><label>Dewey Class. No.: </label>[E]