01930oam 2200565 450 991071694830332120211117084922.0(CKB)5470000002526713(OCoLC)681104425(OCoLC)623331649(OCoLC)979864513(EXLCZ)99547000000252671320101112d1988 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierSubstitute materials replacing deteriorated serpentine stone with pre-cast concrete /Robert M. PowersWashington, D.C. :National Park Service, U.S. Department of the Interior, [Preservation Assistance Division],1988.1 online resource (8 pages) illustrationsPreservation tech notes,0741-9023 ;PTN-23.Masonry ;number 1"April 1988"--Page 8.Substitute materials Concrete masonryHistoric buildingsConservation and restorationPrecast concreteConcrete masonryfastHistoric buildingsConservation and restorationfastPrecast concretefastConcrete masonry.Historic buildingsConservation and restoration.Precast concrete.Concrete masonry.Historic buildingsConservation and restoration.Precast concrete.Powers Robert M.1955-1416736United States.National Park Service.Preservation Assistance Division,OCLCEOCLCEOCLCQOCLCFOCLCQOCLCOOCLCQCSFOCLCQGPOBOOK9910716948303321Substitute materials3547449UNINA