Land tenure Social conditions History Politics and government Addresses, essays, lectures China China--History--Civil war, 1945-1949 China--Social conditions--1949-1976 Cultural Revolution, 1966-1969 Farm mechanization Farm tractors Land reform--China--Zhanghuang (Lucheng Xian)--History--20th century Land tenure--China--Zhanghuang (Lucheng Xian)--History--20th century Zhanghuang (Lucheng Xian, China)--History--20th century