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Author

Powers, Robert M., 1955-

Title Water soak cleaning of limestone : the Widener Building, Philadelphia, Pennsylvania / Robert M. Powers.

Imprint

[Washington, D.C.] (P.O. Box 37127, Washington 20013-7127) : U.S. Dept. of the Interior, National Park Service, Cultural Resources, Preservation Assistance Division, [1992]

Copies

Location	Call No.	OPAC Message	Status
Axe Archives Fed Docs	I 29.84/3-7:3	---	Available

Description	6 p. : ill. ; 28 cm.
Series	Preservation tech notes, 0741-9023 ; PTN-37. Masonry ; no. 3
	Preservation tech notes ; PTN-37.
	Preservation tech notes. Masonry ; no. 3.
Note	Caption title.
	Shipping list no.: 92-0608-P.
	"August 1992"--P. 6.
Subject	Cornices -- Maintenance and repair.
	Concrete masonry.
	Historic buildings -- Pennsylvania -- Philadelphia -- Conservation and restoration.
Added Author	United States. National Park Service. Preservation Assistance Division.
Gpo Item No.	0646-J-01
Sudoc No.	I 29.84/3-7:3