How to Cite "How did ounce come to be abbreviated as oz.?" from CliffsNotes.com:

CliffsNotes.com. How did ounce come to be abbreviated as oz.?. 18 Dec 2014
<http://www.cliffsnotes.com/cliffsnotes/history/how-did-ounce-come-to-be-abbreviated-as-oz>.



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