Mysterious crop circles /  
Rob Waring, series editor. 
 - Boston :  Heinle/Cengage Learning,  c2009. 
 - 24 p. :  col. ill., col. map ;  21 cm. 
 - Footprint reading library. Amazing science .
 - Footprint reading library   Amazing science. .
<br/><br/> Several strange signs called 'crop circles' have been discovered in the fields of southern England. These mysterious circles are puzzling to everyone, even scientists. There are several theories about who--or what--made them. Could it be humans who did it? Or could it be something else ... 
<br/><br/><label>ISBN: </label>9781424012336 9781424043767 142404376X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crop circles --Great Britain --Juvenile literature.<br/>Curiosities and wonders --Great Britain --Juvenile literature.<br/>Readers.
<br/><br/><label>Dewey Class. No.: </label>428.6