?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Helmi+Rakhman&rft.au=Muhammad%2C+Helmi+Rakhman&rft.aulast=Muhammad&rft.title=PROSES+PEMBELAJARAN+SKILL+PENGELASAN+SMAW+3G+DI+SMK+NEGERI+1+SEDAYU+BANTUL&rft.degree=S1&rft.date=17+March+2016&rft.inst=U+N+Y