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The Secretary of the Interior's proposed historic preservation professional qualification standards

[Washington, D.C.] : Dept. of the Interior, National Park Service, National Center for Cultural Resources Stewardship & Partnerships, Heritage Preservation Services, [1997] 1997

The Secretary of the Interior's standards for the treatment of historic properties : with guidelines

Weeks, Kay D.
Washington, D.C. : U.S. Department of the Interior, National Park Service, Cultural Resource Stewardship and Parnterships, Heritage Preservation Services, 1995. 1995