http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
25 volumes : illustrations, plates, maps, diagrams ; 25 cm.
Vols. 1 (1905)-20 (1925). 1 v.; v. 21 (1926)-25 (1930). (Includes index to the journal under its later title.) 1 v.
Continued in Mar.-Apr. 1930 by: Economic geology and the bulletin of the Society of Economic Geologists.
Economic geology and the bulletin of the Society of Economic Geologists