?url_ver=Z39.88-2004&rft_id=10.3390%2Fpolym12020400&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Azeem%2C+B.&rft.aulast=Azeem&rft.aufirst=B.&rft.title=Polymers&rft.issn=20734360&rft.atitle=Production+and+characterization+of+controlled+release+urea+using+biopolymer+and+geopolymer+as+coating+materials&rft.issue=2&rft.volume=12&rft.date=2020&rft.genre=article