https://etd.repository.ugm.ac.id/penelitian/detail/429082009never1.0https://etd.repository.ugm.ac.id/penelitian/detail/429112009never1.0https://etd.repository.ugm.ac.id/penelitian/detail/429122009never1.0https://etd.repository.ugm.ac.id/penelitian/detail/429132009never1.0https://etd.repository.ugm.ac.id/penelitian/detail/429142009never1.0https://etd.repository.ugm.ac.id/penelitian/detail/429152009never1.0https://etd.repository.ugm.ac.id/penelitian/detail/429162009never1.0https://etd.repository.ugm.ac.id/penelitian/detail/429172009never1.0https://etd.repository.ugm.ac.id/penelitian/detail/429182009never1.0https://etd.repository.ugm.ac.id/penelitian/detail/429192009never1.0https://etd.repository.ugm.ac.id/penelitian/detail/429202009never1.0https://etd.repository.ugm.ac.id/penelitian/detail/435832009never1.0https://etd.repository.ugm.ac.id/penelitian/detail/435842009never1.0https://etd.repository.ugm.ac.id/penelitian/detail/443432009never1.0https://etd.repository.ugm.ac.id/penelitian/detail/443442009never1.0