https://etd.repository.ugm.ac.id/penelitian/detail/293712006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/293732006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/293752006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/293762006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/293792006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/316122006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/316132006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/316142006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/316152006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/316192006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/337292006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/337322006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/2380432006never1.0