SSengoshi no setsudanmenSengoshi no setsudanmende Yoshiyuki Niwa, Shun'ya YoshimiMateriasDocumentary filmsHistory and criticismSocial conditionsIn motion picturesEnvironmental filmsYouth in motion picturesExpo (International Exhibitions Bureau) (1970 : Osaka, Japan)Kiroku eiga-RekishiNihon-Rekishi-Shōwa jidai(Senkyūhyakuyonjūgonen igo)