Metal tube

Chicago citation style
Metal tube. 1979. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/zk51wp436. (Accessed June 22, 2018.)
APA citation style
(1979) Metal tube. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/zk51wp436
MLA citation style
Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/zk51wp436>.
Note: These citations are programmatically generated and may be incomplete.