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

2 Subjects: “...National Benchmark Tests (NBT)...”

3 Subjects: “...National Health Services...”

4 “... Institute of Technology, Yale University, Norwegian University of Science and Technology, National Energy...”

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