Distributed to depository libraries in microfiche, ending with 1998 issue.
Plný text je přístupný pouze z počítačů Ostravské univerzity
Reports for <1986-> issued every other (i.e., even) year in 2 v.
Vol. for 1990- accompanied by: Natural gas annual. Supplement, company profile.
Data from tables in v. 2 also contained in: Natural gas annual (Computer file); data also available online, via the Federal Bulletin Board, under title: United States. Energy Information Administration. Natural gas data.