Harris, Jerald D. Arsenic and Old Papers. Dinosaur Mailing List Archives. Cleveland Museum of Natural History. 2007-06-27 [2007-07-29]. (原始内容存档于2008-12-04).
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Harris, Jerald D. Arsenic and Old Papers. Dinosaur Mailing List Archives. Cleveland Museum of Natural History. 2007-06-27 [2007-07-29]. (原始内容存档于2008-12-04).