ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] THE only precise estimates that exist to-day for the X age of the Earth are based on measurements of the isotopic composition of lead. Numerous calculations have been reported in the past1, but only two2,3 are of significance at the present time. In both, the assumption is implicit that the ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/1991150a0
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