Papers presented at the 1964 Peking symposium : Agricultural Science, I - Peking symposium, 1964; Zhongguo ke xue ji shu xie hui. (Peking, China : Scientific and Technical Association of the People's Republic of China, 1965)
English, French, and Spanish.
Issued also in Chinese ed.
Photocopy. [S.l., s.n., between 1965 and 1981]. [184] leaves ; 16 x 21 cm.
Keywords: Agriculture