visto da Tullio Pascoli
TAXING ENERGY (Stephen DeCanio; H.E. French III) http://www.amazon.com/Taxing-Energy-Severance-Taxation-Economy/dp/0945999690/ref=sr_1_4?ie=UTF8&qid=1372551669&sr=8-4&keywords=TAXING+ENERGY
THE POLITICAL ECONOMY http://www.amazon.com/Political-Economy-Resource-Foundations-Microeconomics/dp/1601984960/ref=sr_1_5?s=books&ie=UTF8&qid=1372551880&sr=1-5