Colorado Yule marble : building stone of the Lincoln Memorial : an investigation of differences in durability of the Colorado Yule marble, a widely used building stone / by Elaine S. McGee ; prepared in cooperation with the National Park Service.
Imprint
Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : For sale by U.S. Geological Survey, Information Services, 1999.