https://etd.repository.ugm.ac.id/penelitian/detail/318132006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/318142006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/318152006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/318162006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/318172006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/318182006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/318192006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/318202006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/318212006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/318222006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/318232006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/318242006never1.0https://etd.repository.ugm.ac.id/penelitian/detail/318252006never1.0