ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] Fig. 1 N content of bones as a function of absolute age.. . . x.. ., Our results; o , at 3,100 yr and ---, from ref. 5. We investigated the concentration of N, Fe, Al and Ca in bones from the past 9,000 yr. We chose this time interval because of the relatively large number of dated samples found ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/269792a0
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