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The Edward G. Mazurs Collection of Periodic Systems, 1782-1974 (inclusive)
Held at: Science History Institute Archives [Contact Us]
Held at: Science History Institute Archives [Contact Us]
Held at: Union League of Philadelphia [Contact Us]
Held at: Wagner Free Institute of Science [Contact Us]
Held at: Chester County Historical Society [Contact Us]
Held at: Chester County Historical Society [Contact Us]
Held at: Chester County Historical Society [Contact Us]
Held at: Chester County Historical Society [Contact Us]
Held at: Academy of Natural Sciences, Philadelphia [Contact Us]
Held at: Academy of Natural Sciences, Philadelphia [Contact Us]
Held at: Independence Seaport Museum, J. Welles Henderson Archives and Library [Contact Us]
Held at: Library Company of Philadelphia [Contact Us]
Held at: Library Company of Philadelphia [Contact Us]
Held at: Library Company of Philadelphia [Contact Us]
Held at: Library Company of Philadelphia [Contact Us]
Held at: Library Company of Philadelphia [Contact Us]
Held at: Philadelphia Archdiocesan Historical Research Center [Contact Us]
Held at: Philadelphia Archdiocesan Historical Research Center [Contact Us]
Held at: University of Pennsylvania: Archives at the Library of the Katz Center for Advanced Judaic Studies [Contact Us]
Held at: University of Pennsylvania: Archives at the Library of the Katz Center for Advanced Judaic Studies [Contact Us]
Held at: University of Pennsylvania: Archives at the Library of the Katz Center for Advanced Judaic Studies [Contact Us]