National conference on Policy Issues in Outdoor Recreation, Utah, 1966. (1966). Proceedings. Department of the Interior.
Chicagoスタイル(17版)引用形式National conference on Policy Issues in Outdoor Recreation, Utah, 1966. Proceedings. Logan, Utah: Department of the Interior, 1966.
MLA(9版)引用形式National conference on Policy Issues in Outdoor Recreation, Utah, 1966. Proceedings. Department of the Interior, 1966.
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