https://etd.repository.ugm.ac.id/penelitian/detail/299682006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/299702006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/303352006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/304202006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/330832006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/330842006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/330852006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/330862006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/330872006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/330882006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/330892006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/330902006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/330922006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/330932006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/340572006never1.0