https://etd.repository.ugm.ac.id/penelitian/detail/337632007never1.0https://etd.repository.ugm.ac.id/penelitian/detail/337642007never1.0https://etd.repository.ugm.ac.id/penelitian/detail/337652007never1.0https://etd.repository.ugm.ac.id/penelitian/detail/337662007never1.0https://etd.repository.ugm.ac.id/penelitian/detail/345352007never1.0https://etd.repository.ugm.ac.id/penelitian/detail/345362007never1.0https://etd.repository.ugm.ac.id/penelitian/detail/345372007never1.0https://etd.repository.ugm.ac.id/penelitian/detail/345382007never1.0https://etd.repository.ugm.ac.id/penelitian/detail/354772007never1.0https://etd.repository.ugm.ac.id/penelitian/detail/354782007never1.0https://etd.repository.ugm.ac.id/penelitian/detail/354792007never1.0https://etd.repository.ugm.ac.id/penelitian/detail/354802007never1.0https://etd.repository.ugm.ac.id/penelitian/detail/354812007never1.0https://etd.repository.ugm.ac.id/penelitian/detail/368102007never1.0