Herrera, Mario. <br/><br/>
Backpack 1 :  teacher's book / 
Mario Herrera,Diane Pinkley. 
 - White Plains, N.Y. :  Longman,  2005. 
 - 118 p. :  col. ill. ;   28 cm 
<br/><br/><label>ISBN: </label>1405800224 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Children's literature--Study and teaching
<br/><br/><label>LC Class. No.: </label>JUV 00848