Barbosa, Mary Joy Gandeza
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.
Bibliography: page 60.
Environmental protection.
TH 344 B23z 2014
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.
Bibliography: page 60.
Environmental protection.
TH 344 B23z 2014