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  1. Förstemann, K.E.: Einige praktische Bemerkungen und Wünsche über die öffentlichen Bibliotheken in Preußen (1842) 0.02 
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  2. Milkau, F.: Centralkataloge und Titeldruck : geschichtliche Erörterungen und praktische Vorschläge im Hinblick auf die Herstellung eines Gesamtkatalogs der preußischen wissenschaftlichen Bibliotheken (1898) 0.01 
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  3. Arrhenius, S.: On the influence of carbonic acid in the air upon the temperature of the ground (1896) 0.00 
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    Abstract
    Arrhenius's paper is the first to quantify the contribution of carbon dioxide to the greenhouse effect (Sections I-IV) and to speculate about whether variations in the atmospheric concentration of carbon dioxide have contributed to long-term variations in climate (Section V). Throughout this paper, Arrhenius refers to carbon dioxide as "carbonic acid" in accordance with the convention at the time he was writing. Contrary to some misunderstandings, Arrhenius does not explicitly suggest in this paper that the burning of fossil fuels will cause global warming, though it is clear that he is aware that fossil fuels are a potentially significant source of carbon dioxide (page 270), and he does explicitly suggest this outcome in later work

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