بەرھەمی خۆم. Original shapefile downloaded from:

"Citation and Use of NHGIS Data

All persons are granted a limited license to use this documentation and the accompanying data, subject to the following condition:

   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.

   If possible, citations should also include the URL for the NHGIS site: http://www.nhgis.org"

	The copyright holder of this file, [[:NHGIS|NHGIS]], allows anyone to use it for any purpose, provided that the copyright holder is properly attributed. Redistribution, derivative work, commercial use, and all other use is permitted.
	دانەپاڵ: NHGIS Attribution

This file, which was originally posted to http://www.nhgis.org, was reviewed on 30 January 2012 by reviewer Magog the Ogre, who confirmed that it was available there under the stated license on that date.