Noboru Koyama has written:
'Chusai no kenkyu'
'Minji soshoho (Gendai horitsugaku zenshu)'
'Tasu tojisha sosho no kenkyu'
'Hanketsuko no kenkyu'
'Minji saiban no honshitsu o sagashite'
'Sosho koi, rissho sekinin, sosho yoken no kenkyu'
Noboru Kawakita has written: 'Rekishi monogatari no sekai'
Noboru Terakura has written: 'Shinshu anjinron no kenkyu'
Takeo Koyama has written: 'Watakushi no mita Chugoku tairiku gojunen'
Noboru Inamoto has written: 'Japanese primer = Nihongo tokuhon'
Noboru Yuyama has written: 'Ri Hua ci dian'
Noboru Noguchi has written: 'Nihon-gata keiei shippai no kenkyu' '\\'
Toshihiko Koyama has written: 'Genji monogatari kyutei gyoji no tenkai' 'Genji monogatari to fudo'
Fumio Koyama has written: 'Bummei no naka no otokotachi' -- subject(s): History, Intellectual life
Noboru Shimizu has written: 'Dechuan yi zu' -- subject(s): Biography, History
Naotsugu Koyama has written: 'Echi-sa no densetsu' -- subject(s): Japan, Legends, Niigata (Prefecture)
Noboru Nakamura has written: 'Kobayashi Hideo to Witogenshutain' -- subject(s): Criticism and interpretation, Influence
Noboru Takano has written: 'Seibu-Shinjuku-sen kakueki teisha' -- subject(s): Description