Osamu Tsubata has written:
'Gendai tanka bunrui jiten' -- subject(s): Indexes, Japanese poetry, Waka
Osamu. Ayusawa has written: 'Bunrui to mokuroku'
Osamu Tsukasa has written: 'Otosann daisuki'
Osamu Hayaishi has written: 'Enzyme mechanism'
Osamu Higuchi has written: 'Kigyo nenkin no gengaku mondai'
Osamu Tsukuda has written: 'Itokoku to torai Yamataikoku' -- subject(s): History
Osamu Kojima has written: 'Accounting history' -- subject(s): Accounting, Bookkeeping, History
Osamu Matsuyama has written: 'An introduction to the languages in Southeast Asia' -- subject(s): Languages
Osamu Kuno has written: 'Furuta Oribe no sekai' -- subject(s): Japanese tea masters, Biography
Shin Itagaki has written: 'Dazai Osamu'
Osamu Terasaki has written: 'Senzen Nihon no seiji to shimin ishiki' -- subject(s): Political participation, History
Osamu Mizutani has written: 'Nihongo notes 2' 'Situational Japanese 1' 'An introduction to newspaper Japanese' 'How to be polite in Japanese'
Yoshitaka Kikuta has written: 'Watakushi no Dazai Osamu'