Duncan, H. (1856). Sacred philosophy of the seasons: Illustrating the perfections of God in the phenomena of the year. Robert Carter & Brothers.
Citace podle Chicago (17th ed.)Duncan, Henry. Sacred Philosophy of the Seasons: Illustrating the Perfections of God in the Phenomena of the Year. New York: Robert Carter & Brothers, 1856.
Citace podle MLA (8th ed.)Duncan, Henry. Sacred Philosophy of the Seasons: Illustrating the Perfections of God in the Phenomena of the Year. Robert Carter & Brothers, 1856.
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