ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] IN our recent letter to NATURE1, we did not mean to infer that reflections from the 60 km. level had not been found before. So early as 1930, Appleton2 noticed reflections of this type. In 1935, Mitra and Syam3 recorded reflections from this level ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/138245b0
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