About: http://webisa.webdatacommons.org/199831889

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	Controversy has sometimes arisen over whether there is a need to accommodate the limitations of survey design in estimating population change from the count data collected in bird surveys.
http://www.w3.org/ns/prov#wasQuotedFrom	usgs.gov