http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Southern District Study Committee on Drilling Fluids.
10 unnumbered pages, 215 pages : illustrations, maps. ; 28 cm.
Edited by a subcommittee of the API Southern District Study Committee on Drilling Fluids.
Some earlier editions prepared by Petroleum Extension Service, the University of Texas.