000			00508nam a2200145 4500
999			_c15448 _d15448
008			200527b ||||| |||| 00| 0 eng d
022			_a2094-8042
082			_aDPer 370.105 M72 June 2010-Mar 2011 v. 59 n. 1-10
100			_aRaña, Elisher A. _942222
245			_aThe ER device: _ban instructional material/ _cElisher A. Raña.
260			_aPhilippines: _bIn the Grade School, Inc., _cc2010-2011.
300			_av59 n4, page 160: _billustrations; _c28 cm.
650			_aMathematics. _942161
942			_2ddc _cPER