panyb15715 2008/04/22
111ok [img]http://www.instrument.com.cn/bbs/images/affix.gif[/img][url=http://www.instrument.com.cn/bbs/download.asp?ID=86270]Evaluation of HPLC Mobile Phases and Extracts for the Determination of Glycyrrhizic Acid in Licorice and Tobacco [/url]