edited by Thomas Biolsi
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Buku Teks
American Heritage Publishing, 1961
Buku Teks
Day, A. Grove (Arthur Grove), 1904-1994
University of Nebraska Press, 1951
Koleksi Publik
Iverson, Peter
West Sussex John Wiley & Sons Inc , 2015
Buku Teks
National Geographic Society, 1955
Buku Teks