?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Lavina&rft.aulast=Stef&rft.au=+Stef+Lavina&rft.issn=1788-5345&rft.pages=398-403&rft.volume=6&rft.atitle=Effects+of+some+feed+additives+on+bioproductive+and+biochemical+indices+of+blood+serum+in+broilers&rft.issue=1&rft.title=Agr%C3%A1r-+%C3%A9s+vid%C3%A9kfejleszt%C3%A9si+szemle&rft.date=2011&rft.genre=article