Lassieur, Allison. <br/><br/>
Mars alien attack! / 
by Allison Lassieur ; illustrated by Dave White. 
 - New York :  Scholastic,  c2008. 
 - 31 p. :  col. ill. ;  23 cm. 
 - Lego space adventures. .
 - Lassieur, Allison.  LEGO space adventures. .
 - Scholastic reader.  Level 3, Growing reader. .
<br/><br/> "Energy crystals are discovered in a canyon on Mars.  Who will reach them first? The humans? Or the aliens?"--P. [4] of cover. 
<br/><br/> 450  Lexile. 
<br/><br/><label>ISBN: </label>9780545082198 0545082196 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Extraterrestrial beings--Juvenile fiction.<br/>Space warfare--Juvenile fiction.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Mars (Planet)--Exploration--Juvenile fiction.