Ordering address: Supt. of Docs., U.S. Govt. Print. Off., Washington, DC 20402 ; Single copies available from: Books and Open-File Reports Section, U.S. Geological Survey, Federal Center, Bldg. 810, Box 25286, Denver, CO 80225.
Title from cover.
Coal abstracts, 1986-
Energy information abstracts, 1986-
Energy research abstracts, 1986-
Environment abstracts, 1986-
GeoRef, 1986-
Index to U.S. government periodicals, 1986-
Vol. 22, no. 5-6 distributed to depository libraries in microfiche.