Gardner, Mona
Harcourt, Brace & company, 1939
Buku Teks
Tuwhare, Hone
John McIndoe, 1977
Buku Teks
Asimov, Isaac, author
Collier Books, 1962
Buku Teks
Sears, William, author
Bahá'i Publishing Trust, 1960
Buku Teks
Macdonald, Lee, author
[Springer, ], 2012
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