Elements of natural philosophy : a book for beginners, 660 - Chandler Collection no. 38, Volume: Archives Chandler Collection no. 38. Clarion University Archives.

Elements of natural philosophy : a book for beginners, 660 - Chandler Collection no. 38, Volume: Archives Chandler Collection no. 38. Clarion University Archives. http://as-clarion.klnpa.org/repositories/2/resources/1019 Accessed December 25, 2025.