Religioso, Teresita F.; Vengco, Lilia G.,  c1999. <br/><br/>
Discovering Earth and the Solar System / 
Religioso, Teresita F.; Vengco, Lilia G. 
 - Philippines :  SIBS Publishing House, Inc,  c1999. 
 - 320p. :  illus. ;  25.4 cm. 
<br/><br/><label>ISBN: </label>971-791-041-3