About: http://webisa.webdatacommons.org/229237011

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	Nationwide aerial photography begun by USDA and other agencies as early as 1930 is a valuable source of information for establishing past management histories and vegetation response to treatments on rangelands.
http://www.w3.org/ns/prov#wasQuotedFrom	usda.gov