1 Subjects: “...sustainable regional development...”

2 Subjects: “...regional differences...”

3 Subjects: “...regional difference...”

4 Subjects: “...Mediterranean Region...”

5 Subjects: “...Mediterranean Region...”

6 Subjects: “...hilly region...”

7 Subjects: “...arid regions...”

8 Subjects: “...Sanhe region...”

9 Subjects: “...arid regions...”

10 Subjects: “...cold region of China...”

11 Subjects: “...regional growth...”

12 Subjects: “...regional growth...”

13 Subjects: “...regional growth...”