?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Ryan+Aditya&rft.au=Prianto%2C+Ryan+Aditya&rft.aulast=Prianto&rft.title=Pengaruh+Sudut+Konsentrator+Terhadap+Kinerja+Turbin+Angin+Savonius+Tipe+U&rft.degree=Bachelor&rft.inst=Universitas+Muhammadiyah+Prof.+Dr.+HAMKA&rft.date=30+August+2019