Medina, Phil <br/><br/>
Homework helpers.  Earth science / 
 Earth science 
Phil Medina 
 - Franklin Lakes, NJ :  Career Press,  c2005 
 - 351 p. :  ill. ;  23 cm. 
 - Homework helpers .
 - Homework helpers (Career Press Inc.) .
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9781564147677 1564147673 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth sciences