China's "Thirteenth Five-Year Plan" clearly defined ____ urban agglomerations.
A、19
B、20
C、21
D、22
China's "Thirteenth Five-Year Plan" clearly defined ____ urb - 1. An Overview of China's Economic Development: The Origin of NSRE - 新结构区域经济学导论 - U校园 | 大学网课搜题引擎