https://etd.repository.ugm.ac.id/penelitian/detail/141262000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/143672000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/143682000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/143692000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/144232000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/144652000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/144702000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/146032000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/146042000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/146052000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/151392000never1.0