Llagas, Avelina T. <br/><br/>Manual of information on secondary education / Avelina T. Llagas  - Metro Manila :  Department of Education, Culture and Sports Bureau of Secondary Education,  [date of publication not idenfitied].  ©1993  - i, 221 p.  col. ill.; 25 cm. <br/><br/><label>Subjects--Topical Terms: </label><br/>Education<br/><br/><label>LC Class. No.: </label>LB15  / .D441 1993