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  1. By: Gitmez, Gulden Usman - Sarjeant, William Antony Swinthin
    Type: Article
    In: Bulletin of the British Museum (Natural History) Geology
    Volume: 21
    Date: 1972
    Page Range: 173--257
    Publication Info: London, BM(NH),
  2. By: Krukewich, Linda Ann - Sarjeant, William Antony Swinthin
    Type: Article
    In: Bulletin of the British Museum (Natural History). Geology. Supplement
    Volume: 3
    Issue: Appendix II
    Date: 1983
    Page Range: 25--54
    Publication Info: London, BM(NH),