http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Meddelelser fra Dansk geologisk forening =
Bulletin of the Geological Society of Denmark
Bulletin of the Geological Society of Denmark 1951-
No. 1 (1894)-12 (1906) have no volume numbers; no. 13 is v. 3, no. 13. Cf. Union list of serials.