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  • Articles  (2)
  • Nature Publishing Group  (2)
  • 1970-1974
  • 1955-1959  (2)
  • 1950-1954
  • 1959  (2)
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  • Articles  (2)
Years
  • 1970-1974
  • 1955-1959  (2)
  • 1950-1954
Year
  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 183 (1959), S. 212-214 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE sequence of geological events in many parts of the world since the pre-Cambrian has been well established by palseontological studies. The relative duration of each of the various periods into which it is customary to divide post-Cambrian time has also been estimated from a comparison of the ...
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 183 (1959), S. 769-770 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] It has been known for a long time that loss of radiogenic argon can occur to a variable extent in some minerals which show no apparent alteration, notably potassium felspar. Thus Prof. Davidson's interpretation of the Russian argon/potassium age values is not-justified. This variable loss is often ...
    Type of Medium: Electronic Resource
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