00753nam a2200181 a 4500003000200000005001700002008004100019050003100060100002800091245013100119260009200250300004800342504004100390650003100431650004100462650002500503650004300528020250605145832.0021120s19uu    xx            00    eng d  aPGS RJ 496.B52b.M291 2000  aMante, Raymond Gilbert.  aThe effects of carrying heavy backpack on the grade four students of Southville International School /cRaymond Gilbert Mante.  aLas Piñas City, Philippines :  bSouthville International School and Colleges,c2000.  a27 pages :bcolored illustrations ;c28 cm.  aIncludes bibliographical references.  aBackpacksvHealth aspects.  aSchool childrenvHealth and hygiene.  aPosture in children.  aBackvWounds and injuriesvPrevention.