National Park Service, Technical Preservation Services :
Technical Preservation information publication sales.

APA Citation

United States. National Park Service. Technical Preservation Services Division. (1985). National Park Service, Technical Preservation Services: Technical Preservation information publication sales. Washington, D.C.: U.S. Dept. of the Interior, National Park Service, Preservation Assistance Division, Technical Preservation Services.

MLA Citation

United States. National Park Service. Technical Preservation Services Division. National Park Service, Technical Preservation Services: Technical Preservation Information Publication Sales. Washington, D.C.: U.S. Dept. of the Interior, National Park Service, Preservation Assistance Division, Technical Preservation Services, 1985.