Substitute materials
Subtitle: replacing deteriorated serpentine stone with pre-cast concrete
By: Robert M. Powers.
Contributors: United States. National Park Service.
Series: Preservation tech notes -- PTN-23. Masonry ; -- no. 1.; Preservation tech notes -- PTN-23.; Preservation tech notes -- no. 1.
Publisher: National Park Service, U.S. Dept. of the Interior
Published: 1988
Place of publication: Washington, D.C
Language: eng
Subjects: Concrete masonry.; Historic buildings -- Conservation and restoration.; Precast concrete.
Notes: Caption title.

Shipping list no.: 88-450-P.

"April 1988"--P. 8.