https://etd.repository.ugm.ac.id/penelitian/detail/454022010never1.0https://etd.repository.ugm.ac.id/penelitian/detail/454032010never1.0https://etd.repository.ugm.ac.id/penelitian/detail/469002010never1.0https://etd.repository.ugm.ac.id/penelitian/detail/469012010never1.0https://etd.repository.ugm.ac.id/penelitian/detail/471622010never1.0https://etd.repository.ugm.ac.id/penelitian/detail/471632010never1.0https://etd.repository.ugm.ac.id/penelitian/detail/477332010never1.0https://etd.repository.ugm.ac.id/penelitian/detail/477342010never1.0https://etd.repository.ugm.ac.id/penelitian/detail/477352010never1.0https://etd.repository.ugm.ac.id/penelitian/detail/477362010never1.0https://etd.repository.ugm.ac.id/penelitian/detail/485722010never1.0https://etd.repository.ugm.ac.id/penelitian/detail/485732010never1.0https://etd.repository.ugm.ac.id/penelitian/detail/485742010never1.0https://etd.repository.ugm.ac.id/penelitian/detail/485752010never1.0https://etd.repository.ugm.ac.id/penelitian/detail/491092010never1.0