1

2

3 “... gradients in most large urban areas with profound consequences for housing policies and the city...”

4

5

6 Subjects: “...slope gradient...”

7 Subjects: “...urban-rural gradient...”

8 Subjects: “...precipitation gradient...”

9 Subjects: “...gradient operator...”

10 Subjects: “...stowing gradient...”

11 Subjects: “...gradients...”

12 Subjects: “...topographic gradient...”

13 “... extrêmement volatile du gradient technophile/technophobe, tradition/modernité et bien entendu nature/culture...”

14