The Oroqen : the chinese historical ethnographic film series, 1957-1966. Yang Guanghai, Qiu Pu, Zhao Fuxing, Lü Guangtian et Karsten Krüger, auteurs
Yang Guanghai Zhao Fuxing Lü Guangtian Krüger, Karsten 1998 1963
Online access. The library also has physical copies.