http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Canadian journal of archaeology (Online)
Vol. 22 issued over a 2 year period: no. 1 (1998), no. 2 (1999); additional vol. published in 1999 as v. 23, no. 1/2.
Vols. 23-25 (1999-2001) each issued as a combined no. 1/2.
Bulletin (Canadian Archaeological Association)