WALAI AutoLIB – RSSRSSWALAI AutoLibBritish plant communities /J.S. Rodwell, editor ; C.D. Pigott ... [et al.] for the Nature Conservancy Council.http://www.opac.sskru.ac.th/opac/catalog/BibItem.aspx?BibID=b00003305<img src="https://www.opac.sskru.ac.th/bookcover/3305/3305-fc-t.gif" align="left" height="150" width="120"/>520330North American terrestrial vegetation /edited by MichaelG. Barbour, William Dwight Billings .http://www.opac.sskru.ac.th/opac/catalog/BibItem.aspx?BibID=b00002906<img src="https://www.opac.sskru.ac.th/bookcover/2906/2906-fc-t.gif" align="left" height="150" width="120"/>520325