?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Redaksi&rft.au=Buletin+Penelitian+Kesehatan%2C+Redaksi&rft.aulast=Buletin+Penelitian+Kesehatan&rft.volume=49&rft.title=Buletin+Penelitian+Kesehatan&rft.issue=3&rft.atitle=Front+Matter+Buletin+Penelitian+Vol.+49+No.+3+Tahun+2021&rft.issn=0125+%E2%80%93+9695&rft.date=2021&rft.genre=article