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Climatic change in Africa in the last 20,000 years [texte imprimé] / Grove, A. T. . - Institut de Géographie/Université d'Alger . - Institut de Géographie/Université d'Alger, 1972. ISSN : CI-04961 Two main problemes arise in tracing the history of climatic change in Africa, firstly translating the geological or other evidence into climate terms and secondly dating the events involved. Carbon 14 dating provides an opportunity to solve the latter problem for the last 40,000 years, though it must be recognied that the materials dated and from differences between isotopic and absolute dates. In this paper it is shown that certain regularities emerge, in large areas of the continent experiencing simiar shifts in climate at about the same times in the periods of radio-carbon dating and of instrumental records. This is not to say that there are any regular periodicities. Langues : Français (fre)
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Code-barres | Cote | Support | Localisation | Section | Disponibilité |
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CI03B961.146066 | CI-04961 | Monographie | Bibliothèque CDI-Ouaga | Fond documentaire | Disponible |
CI03B961.146065 | CI-04961 | Monographie | Bibliothèque CDI-Ouaga | Fond documentaire | Disponible |
CI03B961.146063 | CI-04961 | Monographie | Bibliothèque CDI-Ouaga | Fond documentaire | Disponible |
CI03B961.146064 | CI-04961 | Monographie | Bibliothèque CDI-Ouaga | Fond documentaire | Disponible |
CI03B961.146062 | CI-04961 | Monographie | Bibliothèque CDI-Ouaga | Fond documentaire | Disponible |
CI03B961.146061 | CI-04961 | Monographie | Bibliothèque CDI-Ouaga | Fond documentaire | Disponible |
CI03B961.146060 | CI-04961 | Monographie | Bibliothèque CDI-Ouaga | Fond documentaire | Disponible |
CI03B961.146059 | CI-04961 | Monographie | Bibliothèque CDI-Ouaga | Fond documentaire | Disponible |