-
Guoji Zhongwen Jiaoyu Hsk Biaozhun (Chinese Proficiency Grading Stards For International Chinese LanCollectifBeijing Lcu25,90
-
Xinjiang Statictical year book 2019 - 新疆统计年鉴(附电子版)National Bureau statistics (Collectif)China Statistic195,00
-
China Statistical Yearbook 2019 - 中国统计年鉴 2019National Bureau of Statistics (Collectif)China Statistic180,00