WALAI AutoLIB – RSSRSSWALAI AutoLibA first course in differential equations with modeling applications /Dennis G. Zill .http://www.opac.sskru.ac.th/opac/catalog/BibItem.aspx?BibID=b00005317<img src="https://www.opac.sskru.ac.th/bookcover/5317/5317-fc-t.gif" align="left" height="150" width="120"/>520524Differential equations :a modeling approach /Glenn Ledder.http://www.opac.sskru.ac.th/opac/catalog/BibItem.aspx?BibID=b00000281<img src="https://www.opac.sskru.ac.th/bookcover/281/281-fc-t.gif" align="left" height="150" width="120"/>520222