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<r:Title><r:String>Census of Population for National, State, and County Levels - 1900: NHGIS documentation</r:String></r:Title>
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<r:Label><r:Content xml:lang="en-US">NHGIS Access Requirements</r:Content></r:Label>
<r:Description><r:Content xml:lang="en-US">Describes access and usage requirements for NHGIS</r:Content></r:Description>
<a:ConfidentialityStatement><r:Content xml:lang="en-US">NHGIS contains public data obtained through the U.S. Census Bureau.</r:Content></a:ConfidentialityStatement>
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<r:URI>https://data2.nhgis.org/users/login</r:URI>
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<a:Restrictions><r:Content xml:lang="en-US">The National Historical Geographic Information System (NHGIS) provides, free of charge, aggregate census data and GIS-compatible boundary files for the United States between 1790 and 2010.</r:Content></a:Restrictions>
<a:CitationRequirement><r:Content xml:lang="en-US"><xhtml:div>All persons are granted a limited license to use this documentation and the accompanying data, subject to the following condition:<xhtml:ul><xhtml:li>Publications and research reports based on the database must cite it appropriately. The citation should include the following: Minnesota Population Center. National Historical Geographic Information System: Version 2.0. Minneapolis, MN: University of Minnesota 2011.</xhtml:li><xhtml:li>If possible, citations should also include the URL for the NHGIS site: http://www.nhgis.org</xhtml:li></xhtml:ul><xhtml:br/>In addition, we request that users send us a copy of any publications, research reports, or educational material making use of the data or documentation. Printed material should be sent to:<xhtml:br/>NHGIS<xhtml:br/> Minnesota Population Center<xhtml:br/> University of Minnesota<xhtml:br/>50 Willey Hall<xhtml:br/>225 19th Ave S<xhtml:br/>Minneapolis, MN 55455</xhtml:div></r:Content></a:CitationRequirement>
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<r:Label><r:Content xml:lang="en-US">HIST1900-cnty aquisition</r:Content></r:Label>
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<r:Date><r:SimpleDate>2001-03-10</r:SimpleDate></r:Date>
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<r:URN>urn:ddi:us.mpc:OrgS_MPC_NHGIS:1.0</r:URN>.
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<r:Description><r:Content xml:lang="en-US">The 1900 History file was aquired as part of a collection of 1900-1950 data entered from printed documents through NGHIS subcontract.</r:Content></r:Description>
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<r:RelationshipDescription><r:Content xml:lang="en">DDI Documentation</r:Content></r:RelationshipDescription>
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<r:URN>urn:ddi:us.mpc:NHGIS_Event_2:1</r:URN>.
<r:Label><r:Content xml:lang="en-US">HIST1900-cnty creation of DDI metadata document</r:Content></r:Label>
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<r:Description><r:Content xml:lang="en-US">Data dictionary information plus additional content from original print documents and materials regarding the 1990 U.S. Census in IPUMS were complied in DDI and verified.</r:Content></r:Description>
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<r:Description><r:Content xml:lang="en-US">The HIST1990-cnty metadata and data files were successfully integrated into the NHGIS system for the May 2001 release.</r:Content></r:Description>
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<r:Title><r:String>Twelfth Census of the United States Taken in the Year 1990, Census Reports Volume I - Population Part I</r:String></r:Title>
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<r:CreatorName affiliation="Interior Department"><r:String>United States Census Office</r:String></r:CreatorName>
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<r:PublisherName><r:String>Washington: United States Census Office</r:String></r:PublisherName>
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<r:SimpleDate>1901</r:SimpleDate>
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