1 Subjects: “...National security / United States / http://id.loc.gov/authorities/subjects/sh85140387...”

2 Subjects: “...national park...”

3 Subjects: “...National Parks...”

4 “... tough decisions. How should a developing nation allocate its budget between building schools for towns...”

5 “... to the possibility of using eco-innovations for the national transition to decarbonization in the integrated European...”

6 “..., and nonprofit organizations. The objective of the convention was to develop a national healthy retail research...”

7 “... Development Goals (SDGs) set by the United Nations (UN). There are lots of challenges to developing modern...”

8 “... of national and international governments is limited, this challenge has generated a strong interest...”