1 Subjects: “...efficient buildings...”

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

3 Subjects: “...resource efficiency...”

4 Subjects: “...efficiency...”

5 Subjects: “...water use efficiency...”

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

7 Subjects: “...Chinese provincial input efficiency...”

8 Subjects: “...efficiency...”

9 Subjects: “...anti shrinkage efficiency...”