Πίνακας περιεχομένων:
  • Introduction: technological innovation in natural resource industries / R. David Simpson
  • Innovation and productivity in U.S. coal mining / Joel Darmstadter
  • Technological improvement in petroleum exploration and development / Douglas R. Bohi
  • Innovation, productivity growth, and the survival of the U.S. copper industry / John E. Tilton and Hans H. Landsberg
  • Land use change and innovation in U.S. forestry / Roger A. Sedjo
  • Productivity trends in the natural resource industries: a cross-cutting analysis / Ian W.H. Parry.