https://etd.repository.ugm.ac.id/penelitian/detail/1325372018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1325552018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1541822018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1544372018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1544482018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1544492018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1544762018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1544792018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1544832018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1544852018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1544982018never1.0https://etd.repository.ugm.ac.id/penelitian/detail/1564832018never1.0