Chemical age

Chicago citation style
Chemical age. 1920-1925. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/008898807. (Accessed November 21, 2018.)
APA citation style
(1920-1925) Chemical age. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/008898807
MLA citation style
Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/008898807>.
Note: These citations are programmatically generated and may be incomplete.