http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Oil and gas journal presents natural-gas pipeline systems of the United States and Canada
Natural-gas pipeline systems of the United States and Canada
"Copyright by Petroleum Publishing Co. and E. C. Jacobson."
"Published as supplement to the Oil and gas journal, volume 54, number 2."
Includes list of "Principal natural-gas pipe-line systems."