https://etd.repository.ugm.ac.id/penelitian/detail/1093102017never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1093662017never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1095302017never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1099902017never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1120522017never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1131812017never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1131912017never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1278392017never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1282722017never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1288022017never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1288702017never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1306882017never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1306992017never1.0