https://etd.repository.ugm.ac.id/penelitian/detail/86942000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/86952000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/86962000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/86972000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/86982000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/86992000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/87002000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/87012000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/87022000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/87032000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/87042000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/87052000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/87062000never1.0https://etd.repository.ugm.ac.id/penelitian/detail/89162000never1.0