http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Oil conservation through interstate agreement
by Northcutt Ely ... chairman, the Technical and advisory committee to the Federal oil conservation board. Federal oil conservation board, Washington, D. C. 1933.
Microreproduction of 1933 edition published by U.S. G.P.O., Washington.
Oil, the federal investigations ; Reel 3