https://etd.repository.ugm.ac.id/penelitian/detail/174352000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/175392000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/175862000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/175872000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/175882000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/175912000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/178282000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/178292000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/179092000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/179142000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/179172000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/179212000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/180742000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/180892000never1.0