?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Desi&rft.aulast=Yulia&rft.au=Yulia%2C+Desi&rft.inst=Universitas+Negeri+Padang&rft.title=Analisis+Pendapatan+Petani+Ubi+Jalar+di+Nagari+Sungai+Jambu+Kecamatan+Pariangan+Kabupaten+Tanah+Datar&rft.degree=Bachelor%2FSkripsi&rft.date=August+2016