?url_ver=Z39.88-2004&rft_id=10.4028%2Fwww.scientific.net%2FAMR.917.199&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=N.&rft.au=Rahamnian%2C+N.&rft.aulast=Rahamnian&rft.pages=199-208&rft.atitle=A+comparison+of+co-current+and+counter-current+modes+of+operation+in+urea+prilling+tower&rft.isbn=9783038350521&rft.volume=917&rft.issn=10226680&rft.date=2014&rft.title=Advanced+Materials+Research&rft.genre=article