1 Subjects: “...factorial surveys...”

2 Subjects: “...survey...”

3 Subjects: “...expert survey...”

4 Subjects: “...survey...”

5 Subjects: “...Schwartz's Value Survey (SVS)...”

6 Subjects: “...questionnaire survey...”

7 Subjects: “...vegetation survey...”

8 Subjects: “...surveys and questionnaires...”

9 “... results from surveys and desktop research; others depict approaches on experimentation, living labs...”