About: http://webisa.webdatacommons.org/394966289

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	SeerBlue07-13-2008, 01:09 PMhere is an excellant site for free dem data, GIS Data Depot (http://data.geocomm.com/catalog/), you have to register, but it is free.
http://www.w3.org/ns/prov#wasQuotedFrom	cartographersguild.com