Investigating Salt Problems: Ion Test StripsSmithsonian Scholarly Press8–12
Charola, A. Elena and Otero, Jorge. 2021. "Investigating Salt Problems: Ion Test Strips." In Built Heritage Evaluation: Manual Using Simple Test Methods. Charola, A. Elena, Otero, Jorge, DePriest, Paula T., and Koestler, Robert J., editors. 8–12. Washington, DC: Smithsonian Scholarly Press. In Open Monographs. (https://doi.org/10.5479/si.16567623.v1)