?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=SABAU%2C+PH-D+STUDENT+MARIUS+MIRCEA&rft.aulast=SABAU&rft.aufirst=MARIUS+MIRCEA&rft.date=2006&rft.title=THE+EFFICIENCY+OF+BIO+PRODUCTION+IN+ROMANIA&rft.genre=proceeding