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Johnstown, Pennsylvania Johnstown, Ohio Johnstown, Quận Rock, Wisconsin Johnstown, Quận Polk, Wisconsin Johnstown, Quận Grand Forks, Bắc Dakota Johnston, Iowa John Stones Johnstonalia axilliflora Johnston City, Illinois John Towner WilliamsTài liệu tham khảo
WikiPedia: Johnstown, Pennsylvania http://factfinder2.census.gov/faces/tableservices/... http://www.census.gov/geo/www/gazetteer/gazetteer2...