Classes - science

Chicago citation style
Classes - science. 1972-04. Retrieved from the Digital Public Library of America, https://ark.digitalcommonwealth.org/ark:/50959/rn301442w. (Accessed December 17, 2018.)
APA citation style
(1972-04) Classes - science. Retrieved from the Digital Public Library of America, https://ark.digitalcommonwealth.org/ark:/50959/rn301442w
MLA citation style
Retrieved from the Digital Public Library of America <https://ark.digitalcommonwealth.org/ark:/50959/rn301442w>.
Note: These citations are programmatically generated and may be incomplete.