00297nam a2200085Ia 4500008004100000021001100041100003300052245008600085264004000171230517s9999    xx            000 0 und d  aSHS7541 aCristobal, Amadeo Pangilinan10aEnhanced teachers manual: bPractical research 1 /cCristobal, Amadeo Pangilinan.  aQuezon City : bC & E Pub., c2017.