?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Vivi&rft.aulast=Yulianti&rft.au=Yulianti%2C+Vivi&rft.inst=Universitas+Negeri+Padang&rft.title=Studi+Perilaku+Masyarakat+Penambang+Pasir+di+Sepanjang+Batang+Tarusan+Kecamatan+Koto+XI+Tarusan+Kabupaten+Pesisir+Selatan&rft.degree=Bachelor%2FSkripsi&rft.date=February+2011