?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Iqbal&rft.au=Iqbal%2C+H.&rft.aufirst=H.&rft.atitle=Pursuance+of+piper+nigrum+and+cinnamomum+verum+on+poly+vinyl+alcohol-starch+hydrogel+membrane&rft.pages=489-500&rft.issue=3&rft.volume=41&rft.issn=02535106&rft.date=2019&rft.title=Journal+of+the+Chemical+Society+of+Pakistan&rft.genre=article