00470nam a22001217a 4500008004100000020001500041082002900056100002500085245007500110260005300185300002400238650008600262140602b        xxu||||| |||| 00| 0 eng d  a971086906x  aFil. 371.3078 G19bc2008  aGaro, Candelaria D.   aTheories and principles of educational technology/cCandelaria D. Garo  aMandaluyong City:bNational Book Store, cc2008.  axiii, 110p. :bill.  xTeaching--aids and devicesxAudiovisual materialsxInstructional materials center