WALAI AutoLIB – RSSRSSWALAI AutoLibSchaum's easy outlines :Modern abstract algebra /Frank Ayres.http://202.29.57.205/opac/catalog/BibItem.aspx?BibID=b00032900<img src="https://www.opac.sskru.ac.th/bookcover/32900/32900-fc-t.gif" align="left" height="150" width="120"/>130213