TY - BOOK AU - He Bingdi AU - 何炳棣 TI - Zhong guo gu jin tu di shu zi di kao shi he ping jia SN - 7500402422 PY - 1988/// KW - Society -- Sociology -- Rural Area -- Song KW - Society -- Sociology -- Rural Area -- Ming KW - Society -- Sociology -- Rural Area -- Qing ER -