ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] AFTER the re-opening of the nuclear test explosions by U.S.S.R., during September 1961, fresh nuclear debris was found in ground-level air for the first time on September 12 at our Laboratory. Since then, the concentration of artificial radioactivity in the atmosphere has risen and has kept ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/194643a0
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