http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Each number has also a distinctive title.
Split into: Endocrinology and metabolism clinics of North America; and, Baillière's clinical endocrinology and metabolism.
Baillière's clinical endocrinology and metabolism
Endocrinology and metabolism clinics of North America