1 Subjects: “...rail travel...”

2 Subjects: “...travel speed...”

3 Subjects: “...advanced traveler information systems (ATIS)...”

4 Subjects: “...travel behavior...”

5 Subjects: “...travel time...”

6 Subjects: “...travel behaviour...”

7 Subjects: “...travel behavior...”

8 Subjects: “...travel...”

9 Subjects: “...sustainable travel...”

10 Subjects: “...activity-travel patterns...”

11 Subjects: “...travelling salesman problem...”

12 Subjects: “...travelling salesman problem...”

13 “... of geographical borders as well as the individuals who travel between them and those who live in border regions...”

14 “..., the rise of ISIS to Charlie Hebdo. The book also covers lesser worn paths such as the travel guide...”

15 “... to travel, ease of communication and technology, and civil unrest and conflicts. Global populations have...”