Barbosa, Mary Joy Gandeza <br/><br/>
Zero waste management practices of public elementary and secondary schools in Lagangilang district / 
Mary Joy Gandeza-Barbosa. 
 - Sta. Maria, Ilocos Sur :  [s.n.],  2014. 
 - xiii, 72 pages :   illustration ;  28 centimeter. 
<br/><br/>Bibliography: page 60. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental protection.
<br/><br/><label>Dewey Class. No.: </label>TH 344 B23z 2014