Source

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http://legacy.library.ucsf.edu/tid/fjk51a00/pdf

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http://cat.inist.fr/?aModele=afficheN&cpsidt=2784832

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http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12817713&dopt=Abstract

Foster, K.G. "Composition of the Secretion from the Eccrine Sweat Glands of the Cat's Foot Pad." The Journal of Physiology, 1966. 184(1): 106-09.

http://jp.physoc.org/content/184/1/106.full.pdf+html

"Cigarette Ingredients. R.J. Reynolds List of Ingredients." R.J. Reynolds. 2013. Web.

http://www.rjrt.com/tobaccoingredients.aspx

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