https://etd.repository.ugm.ac.id/penelitian/detail/606412013never1.0https://etd.repository.ugm.ac.id/penelitian/detail/615322013never1.0https://etd.repository.ugm.ac.id/penelitian/detail/640532013never1.0https://etd.repository.ugm.ac.id/penelitian/detail/650352013never1.0https://etd.repository.ugm.ac.id/penelitian/detail/653862013never1.0https://etd.repository.ugm.ac.id/penelitian/detail/655222013never1.0https://etd.repository.ugm.ac.id/penelitian/detail/666352013never1.0https://etd.repository.ugm.ac.id/penelitian/detail/666522013never1.0https://etd.repository.ugm.ac.id/penelitian/detail/668012013never1.0https://etd.repository.ugm.ac.id/penelitian/detail/668582013never1.0https://etd.repository.ugm.ac.id/penelitian/detail/668832013never1.0https://etd.repository.ugm.ac.id/penelitian/detail/669172013never1.0https://etd.repository.ugm.ac.id/penelitian/detail/669942013never1.0https://etd.repository.ugm.ac.id/penelitian/detail/673592013never1.0https://etd.repository.ugm.ac.id/penelitian/detail/673602013never1.0https://etd.repository.ugm.ac.id/penelitian/detail/691842013never1.0