Hornberger, M. A. (1974). The spatial distribution of ethnic groups in selected counties in Pennsylvania 1800-1880: A geographic interpretation.
Chicago Style CitationHornberger, Mark Allen. The Spatial Distribution of Ethnic Groups in Selected Counties in Pennsylvania 1800-1880: A Geographic Interpretation. 1974.
MLA CitationHornberger, Mark Allen. The Spatial Distribution of Ethnic Groups in Selected Counties in Pennsylvania 1800-1880: A Geographic Interpretation. 1974.
Warning: These citations may not always be 100% accurate.