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Eckersley, C. E. (Charles Ewart), 1892-1967, author
Longmans, Green and Co., 1953
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Fucilla, Joseph G., author
Follett Publishing Company, 1964
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Cadena, Mariano Velazquez de la, author
Follett, 1962
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Williams, Edwin B., author
Holt, Rinehart and Winston, [Date of publication not identified]
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