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  1. By: Apollonov, M K - Koren, Tatyana N - Nikitin, I F - Paletz, L M - Tzai, D T
    Type: Article
    In: Bulletin of the British Museum (Natural History) Geology
    Volume: 43
    Date: 1988-04-28
    Page Range: 145--154
    Publication Info: London, BM(NH),