?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=A.+Putra&rft.au=A.+Putra%2C+A.+Putra&rft.aufirst=A.+Putra&rft.pages=1-10&rft.atitle=Synthesis+and+Characterization+of+Hydrogel+Composite+Based+on+Bacterial+Cellulose-Gambir+Leaf+Extract+(Uncaria+gambir+Roxb.)&rft.date=2018&rft.issn=Online%3A+1742-6596&rft.title=Journal+of+Physics%3A+Conference+Series&rft.volume=1040&rft.genre=article