1 Subjects: “...economic efficiency of industrial water use (ECEIW)...”

2 Subjects: “...efficient voter rule...”

3 Subjects: “...Environmental Efficiency...”

4 Subjects: “...efficiency...”

5 Subjects: “...efficiency engines...”

6 Subjects: “...street connectivity and efficiency...”

7 Subjects: “...street connectivity and efficiency...”

8 Subjects: “...equity and efficiency...”

9 Subjects: “...technical efficiency...”

10 Subjects: “...green economy efficiency...”

11 Subjects: “...pump efficiency...”

12 Subjects: “...efficiency hypothesis...”

13 Subjects: “...efficiency measurement...”