http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Proceedings of the ... International Congress on Rheology
19 - Published in more than one volume with vol. titles and individual titles for each year.
Proceedings of 6th congress, held in Lyon, Spetember 4-8, 1972, published as v.12, nos.2-4 and v.13, no.1 of Rheologica acta.
9th Congress also published as 4-volume set by the Universidad Autonoma de Mexico in 1984, entitled Advances in rheology.