Koizumi, I. (1973): The late Cenozoic diatoms of Sites 183-193, Leg 19 Deep Sea Drilling Project. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, Initial Reports of the Deep Sea Drilling Project, 19 (Kodiak, Alaska to Yokohama, Japan; July-Sept. 1971), 805-855, georefid:1976-018937