<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="q43072NW" name="Lowell" parent="q43072" scope="quadrangle 1:100,000 scale"/><bt><term thcode="1" code="q43072" name="Boston" parent="qroot" scope="quadrangle 1:250,000 scale"/><term thcode="1" code="qroot" name="USGS Quadrangles" parent="fUS" scope="quadrangle"/><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="q43072NWA3" name="Ashburnham" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWB3" name="Ashby" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWD4" name="Ayer" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWF4" name="Billerica" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWF1" name="Derry" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWB4" name="Fitchburg" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWA4" name="Gardner" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWB1" name="Greenfield" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWB2" name="Greenville" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWH2" name="Haverhill" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWH1" name="Kingston" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWG3" name="Lawrence" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWF3" name="Lowell" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWE1" name="Manchester South" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWC2" name="Milford" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWE2" name="Nashua North" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWE3" name="Nashua South" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWC1" name="New Boston" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWD3" name="Pepperell" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWA1" name="Peterborough North" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWA2" name="Peterborough South" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWD1" name="Pinardville" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWH4" name="Reading" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWG2" name="Salem Depot" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWG1" name="Sandown" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWC4" name="Shirley" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWH3" name="South Groveland" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWD2" name="South Merrimack" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWC3" name="Townsend" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWE4" name="Westford" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWG4" name="Wilmington" parent="q43072NW" scope="quadrangle 1:24,000 scale"/><term thcode="1" code="q43072NWF2" name="Windham" parent="q43072NW" scope="quadrangle 1:24,000 scale"/></nt><rt><term thcode="1" code="f33005" name="Cheshire" parent="fUS33" scope="county"/><term thcode="1" code="h0108" name="Connecticut" parent="h01" scope="hydrologic subregion"/><term thcode="1" code="f25009" name="Essex" parent="fUS25" scope="county"/><term thcode="1" code="f33011" name="Hillsborough" parent="fUS33" scope="county"/><term thcode="1" code="h0109" name="Massachusetts-Rhode Island Coastal" parent="h01" scope="hydrologic subregion"/><term thcode="1" code="h0107" name="Merrimack" parent="h01" scope="hydrologic subregion"/><term thcode="1" code="f25017" name="Middlesex" parent="fUS25" scope="county"/><term thcode="1" code="f33015" name="Rockingham" parent="fUS33" scope="county"/><term thcode="1" code="h0106" name="Saco" parent="h01" scope="hydrologic subregion"/><term thcode="1" code="f25027" name="Worcester" parent="fUS25" scope="county"/></rt></descriptor>