12 SOCIAL SCIENTIST December, 1975. 10 For example, a Republican Senator, Albert Quie, has introduced legislation to extend federal income tax to Puerto Rico {El Mundo 14, January 1977). 16 This had been disclosed several years ago by Claridad, the newspaper of the Partido Socialists. Now it is known that Mobiloil and a subsidiary of Exxon are interested in exploiting the deposits. They could extract more than 200,000 barrels a year for a period of 25 yqars (El Mundo 15 January 1977).