| Bulletin of the National Science Museum Series C (Geology & Paleontology) | date of publication | 
          
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            | Bulletin of the National Science Museum Series C (Geology & Paleontology) Volume 16 Number 2 | June 1990 | 
          
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                |  | Kazumi YOKOYAMA, Yasuji SAITO: | P.41 | 
              
                |  | Petrological Study of Sedimentary Rocks in the Itsukaichimachi Group, Kanto Mountains |  | 
              
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                |  | Masakazu HAGA, Toshiyuki YAMAGUCHI: | P.55 | 
              
                |  | Stratigraphy and Fossil Diatoms of the Neogene to Quaternary Formations in the Eastern Shimokita Peninsula, Aomori Prefecture |  |