WALAI AutoLIB – RSSRSSWALAI AutoLibAlgebra : introductory and intermediate / Richard N. Aufmann, Vernon C. Barker, Joanne S. Lockwood.http://www.opac.sskru.ac.th/opac/catalog/BibItem.aspx?BibID=b00003490<img src="https://www.opac.sskru.ac.th/bookcover/3490/3490-fc-t.gif" align="left" height="150" width="120"/>520330Algebra : introductory and intermediate /Richard N. Aufmann, Vernon C. Barker, Joanne S. Lockwood.http://www.opac.sskru.ac.th/opac/catalog/BibItem.aspx?BibID=b00033244<img src="https://www.opac.sskru.ac.th/bookcover/33244/33244-fc-t.gif" align="left" height="150" width="120"/>130606