see Yearbook of Physical Anthropology, vol. 34 (1991) p. 292-294 for a 
summary of about three methods. 


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Prof. Henry Schwarcz				Tel: (905)525 9140 x24186 
Dept. of Geology				Fax: (905)522 3141
McMaster University
Hamilton, Ontario, L8S 4M1 			email: [log in to unmask]
Canada
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