Title: Sichuan tian ran qi kai fa dui pin kun di qu jing ji dai dong yan jiu : ji yu N pin kun di qu tian ran qi kai fa wei li =  Sichuan tianranqi kaifa dui pinkun diqu jingji daidong yanjiu : jiyu N pinkun diqu tianranqikaifa weili
Subjects: Gas industry, Natural gas
Places: China, Sichuan Sheng