?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Gumelar&rft.au=Gumelar%2C+Agung&rft.aufirst=Agung&rft.title=Rancang+Bangun+CNC+(Computer+Numerically+Controlled)+PCB+Layout+Berbasis+Mikrokontroler&rft.degree=Bachelor%2FTugas+Akhir&rft.inst=Universitas+Negeri+Padang&rft.date=February+2011