Title: Petroleum firm interfuel diversification : empirical description and index measurement /
Authors: Greene, Julian.; Good, David, 1951-; Good, David, 1951-; United States.; United States.
Publisher: U.S. Dept. of Energy, Energy Information Administration, [Office of] Applied Analysis ; for sale by the National Technical Information Service,
Year: 1979
Subjects: Petroleum industry and trade United States; Diversification in industry United States.; Energy industries United States