http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Commonwealth Mining and Metallurgical Congress 1957 : Vancouver, B.C., etc.)
Published by authority of General Committee of the Sixth Commonwealth Mining and Metallurgical Congress
xi, 447 p. : ill., diagrs., maps (1 fold. col. in pocket) ; 30 cm.
On t.p.: 6th Commonwealth Mining and Metallurgical Congress, Canada, 1957."