Leonard, Jonathan Norton
Time-Life International, 1974.
Buku Teks
Time-Life Books, 1973
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Sherrard, Philip
Time-Life International, 1967
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Constable, George
Time-life Int. (Nederland)B.V., 1974
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Edey, Maitland A. (Amstrong), 1910-
Time-Life Books, 1975
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