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  • 1
    Electronic Resource
    Electronic Resource
    Two spot ladybirds as indicators of intense local air pollution (1974)
    [s.l.] : Nature Publishing Group
    Nature 249 (1974), S. 390-392 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Samples previously reported from South Wales3 indicate a consistently low melanic frequency, the maximum being 6% in a sample of 35 individuals from Pontypridd. This is in accord with the occurrence of generally low levels of smoke pollution, in spite of considerable industrialisation7. Fig. la ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/249390a0
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