<descriptor thcode="1"><thesaurus thcode="1" name="Common geographic areas" scope="Names and identifiers of commonly-known geographic areas including oceans, continents, countries, states and provinces in North America, counties in the United States, USGS map quadrangles, and hydrologic units, nested and cross-referenced by overlap." creator="U.S. Geological Survey" rights="Public domain" edition="1.0" date="2002-03-21" codetype="alpha" prefix="geo" uri="http://www.usgs.gov/science/CommonGeographicAreas" tblname="geo" nonpref="geonp" relterm="geort" root_code="root" contact="pschweitzer"><category><term thcode="25" code="13" name="transitive" parent="12" scope="Narrower terms have an &quot;is a&quot; relationship with their broader terms, and generally can be described as part-of, type-of, or instance-of the broader term."/><term thcode="25" code="30" name="ambiguous labels" parent="26" scope="A given preferred label may be used for more than one concept in the thesaurus. A concept must be specified using its unique identifier (code). This may occur in the names of places or people."/><term thcode="25" code="4" name="place" parent="2" scope="Terms indicate extent in space, typically by reference as the names of geographic areas known from information that is stored elsewhere."/><term thcode="25" code="16" name="hierarchical" parent="11" scope="Substantive broader-narrower relationships exist among the terms."/><term thcode="25" code="13" name="transitive" parent="12" scope="Narrower terms have an &quot;is a&quot; relationship with their broader terms, and generally can be described as part-of, type-of, or instance-of the broader term."/><term thcode="25" code="30" name="ambiguous labels" parent="26" scope="A given preferred label may be used for more than one concept in the thesaurus. A concept must be specified using its unique identifier (code). This may occur in the names of places or people."/><term thcode="25" code="4" name="place" parent="2" scope="Terms indicate extent in space, typically by reference as the names of geographic areas known from information that is stored elsewhere."/><term thcode="25" code="16" name="hierarchical" parent="11" scope="Substantive broader-narrower relationships exist among the terms."/></category><altlabel><altlabel>Augmented FIPS 10-4 and FIPS 6-4</altlabel><altlabel>Augmented FIPS 10-4 and FIPS 6-4</altlabel><altlabel>CommonGeographicAreas</altlabel><altlabel>CommonGeographicAreas</altlabel></altlabel></thesaurus><term thcode="1" code="h0207" name="Potomac" parent="h02" scope="hydrologic subregion"/><bt><term thcode="1" code="h02" name="Mid Atlantic" parent="hroot" scope="hydrologic region"/><term thcode="1" code="hroot" name="US hydrologic units" parent="fUS" scope="hydrologic subregion"/><term thcode="1" code="fUS" name="United States" parent="fLD10" scope="country"/><term thcode="1" code="fLD10" name="North America" parent="fLD" scope="continent"/><term thcode="1" code="fLD" name="Land" parent="root" scope="continent"/><term thcode="1" code="root" name="Earth" scope="Common geographic areas focused on the US"/></bt><nt><term thcode="1" code="h020700" name="Potomac" parent="h0207" scope="hydrologic accounting unit"/></nt><rt><term thcode="1" code="q40078SE" name="Baltimore" parent="q40078" scope="quadrangle 1:100,000 scale"/><term thcode="1" code="q38080NW" name="Buena Vista" parent="q38080" scope="quadrangle 1:100,000 scale"/><term thcode="1" code="q41078SW" name="Carlisle" parent="q41078" scope="quadrangle 1:100,000 scale"/><term thcode="1" code="q39080SE" name="Charlottesville" parent="q39080" scope="quadrangle 1:100,000 scale"/><term thcode="1" code="q40080NE" name="Cumberland" parent="q40080" scope="quadrangle 1:100,000 scale"/><term thcode="1" code="q38080NE" name="Dillwyn" parent="q38080" scope="quadrangle 1:100,000 scale"/><term thcode="1" code="fUS11" name="District of Columbia" parent="fUS" scope="state"/><term thcode="1" code="q39080NW" name="Elkins" parent="q39080" scope="quadrangle 1:100,000 scale"/><term thcode="1" code="q40078SW" name="Frederick" parent="q40078" scope="quadrangle 1:100,000 scale"/><term thcode="1" code="q39078SW" name="Fredericksburg" parent="q39078" scope="quadrangle 1:100,000 scale"/><term thcode="1" code="q39080NE" name="Front Royal" parent="q39080" scope="quadrangle 1:100,000 scale"/><term thcode="1" code="q40078NW" name="Hagerstown" parent="q40078" scope="quadrangle 1:100,000 scale"/><term thcode="1" code="q41080SE" name="Johnstown" parent="q41080" scope="quadrangle 1:100,000 scale"/><term thcode="1" code="q40080SW" name="Kingwood" parent="q40080" scope="quadrangle 1:100,000 scale"/><term thcode="1" code="q39078SE" name="Leonardtown" parent="q39078" scope="quadrangle 1:100,000 scale"/><term thcode="1" code="fUS24" name="Maryland" parent="fUS" scope="state"/><term thcode="1" code="q40080NW" name="Morgantown" parent="q40080" scope="quadrangle 1:100,000 scale"/><term thcode="1" code="fUS42" name="Pennsylvania" parent="fUS" scope="state"/><term thcode="1" code="q39080SW" name="Staunton" parent="q39080" scope="quadrangle 1:100,000 scale"/><term thcode="1" code="q38078NE" name="Tappahannock" parent="q38078" scope="quadrangle 1:100,000 scale"/><term thcode="1" code="fUS51" name="Virginia" parent="fUS" scope="state"/><term thcode="1" code="q39078NE" name="Washington East" parent="q39078" scope="quadrangle 1:100,000 scale"/><term thcode="1" code="q39078NW" name="Washington West" parent="q39078" scope="quadrangle 1:100,000 scale"/><term thcode="1" code="fUS54" name="West Virginia" parent="fUS" scope="state"/><term thcode="1" code="q40080SE" name="Winchester" parent="q40080" scope="quadrangle 1:100,000 scale"/><term thcode="1" code="q40078NE" name="York" parent="q40078" scope="quadrangle 1:100,000 scale"/></rt></descriptor>