1 Table of Contents: “... the Sun Directly -- Part 5: Hydrogen Production and Fuel Cell -- Economic Assessment of Three Biomass...”

2 Table of Contents: “... and Economic Issues from Changing a Major Fuel Type as Energy Resource in an Industrial City in Korea...”

3 Table of Contents: “... of Externally Fired Gas Turbines -- Exergy and Exergo-Economic Based Analysis of a Gas Turbine Power Generation...”

4 “... and science, but disciplines as diverse as ecology, education, economics, and information technology...”