SirsiDynix Enterprise http://kllibrary.dbkl.gov.my/client/en_US/pkl/pkl/qu$003dLinux$0026qf$003dSUBJECT$002509Subject$002509Physics$002509Physics$0026ic$003dtrue$0026ps$003d300$0026isd$003dtrue?dt=list 2025-08-10T04:36:51Z