https://etd.repository.ugm.ac.id/penelitian/detail/149782000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/150162000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/151142000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/151152000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/151172000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/151222000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/151292000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/151302000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/151312000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/151442000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/166342000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/166352000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/166762000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2665242000never1.0