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[Milano]: Arnoldo Mondadori Editore, 1963
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München [u.a.]: Droemer, 1961
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Washington, D.C.: Smithsonian Institution, 1961
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Washington, D.C.: Smithsonian Institution, 1954
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Washington: Smithsonian Institution, 1946
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Washington: Smithsonian Institution, 1943
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Washington: United States Government Printing Office, 1941
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Washington: Smithsonian Institution, 1934
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Washington: Smithsonian Institution, 1935
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New York : American Museum of Natural History, 1948
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Washington, DC, 1944 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2008
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Smithsonian Institution, 1961
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Smithsonian Institution, 1955
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Chapman Grant, 1953
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Smithsonian Institution, 1941
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JSTOR, 1941
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JSTOR, 1938
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Smithsonian Institution, 1930
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JSTOR, 1931
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Smithsonian Institution, 1924