https://etd.repository.ugm.ac.id/penelitian/detail/1545452018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1547132018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1547162018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1548032018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1549482018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1550572018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1551442018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1555502018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1557812018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1558152018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1558762018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1575122018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1577922018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1580522018never1.0