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Door of knowledge/

Ortega, Noel S.

Door of knowledge/ Noel S. Ortega. - Philippines: In the Grade School, Inc., c2011. - v60 n6, pages 245-248: illustrations; 27cm.

2094-8042


Programmed instruction--Vocabulary.

DPer 370.105 M72 Jan-Dec 2011 v59-60