http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Owen's commerce and travel and international register
"Africa, Middle East and Far East with international trade lists (Buyer's guide)," 1964-69.
Vols. for 1967- accompanied by commodity index in pocket.
Owen's African and Middle East commerce & travel and international register
Owen's trade directory & business travel guide