United States. National Conservation Congress. Proceedings of the second National Conservation Congress at Saint Paul, September 5-8, 1910.
Chicagoスタイル(17版)引用形式United States. National Conservation Congress. Proceedings of the Second National Conservation Congress at Saint Paul, September 5-8, 1910.
MLA(9版)引用形式United States. National Conservation Congress. Proceedings of the Second National Conservation Congress at Saint Paul, September 5-8, 1910.
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