1 Subjects: “...Infrastructure (Economics) / Security measures / http://id.loc.gov/authorities/subjects/sh...”

2 Subjects: “...BUSINESS & ECONOMICS / Industries / Transportation / bisacsh...”

3 Table of Contents: “... -- 10 Aircraft Performance -- 11 Aircraft Pricing and Economic Analysis...”

4 Table of Contents: “...; 3.3.5 . Economic and practical barriers: customer requirements; 3.3.6 . Infrastructure and standards...”

5 “... dynamic system (automobile, airplane, economic system, etc.). The resulting controlled system is thus...”

6 “... heat transfer and skin friction, along with the economic aspects of space flight. Key concepts relating...”