Used oil re-refining
Subtitle: hearing before the Subcommittee on Advanced Energy Technologies and Energy Conservation Research, Development, and Demonstration of the Committee on Science and Technology, U.S. House of Representatives, Ninety-fifth Congress, first session, December 12, 1977.
Publisher: U.S. Govt. Print. Off.
Published: 1978
Place of publication: Washington
Language: eng
Number of pages: 616
Subjects: Petroleum waste -- United States.; Petroleum conservation -- United States.
Notes: "No. 49."