Yazar
roland m harper
30 cilt bulundu.
Roland M. Harper · Geological Survey of Alabama
293 sayfa · 1913
Botany, Economic / Economic Botany / Plants / Forests and forestry
Roland M. Harper · The Bureau of business research, School of commerce, University of Georgia
105 sayfa · 1930
Natural history / Economic conditions / Natural resources
Roland M. Harper · Geological Survey of Alabama
93 sayfa · 1942
Forests and forestry / Economic conditions / Natural resources / Physical geography
Roland M. Harper · Yayınevi bilinmiyor
152 sayfa · 1920
Economic geography / Economic conditions / Natural resources
Roland M. Harper · The Geographic and Historical Society of the Americas
59 sayfa · 1931
Population / Statistics / Census, 1919
Roland M. Harper · Yayınevi bilinmiyor
265 sayfa · 1924
Cost and standard of living / Farm life / Rural conditions
Roland M. Harper · The American Eugenics Society, Inc.
34 sayfa · 1929
Emigration and immigration / Statistics / Race relations
Roland M. Harper · Reprinted from the Florida Historical Society Quarterly
52 sayfa · 1927
Population / Census