http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
by Ragnar Berfenstam and Inger William-Olsson.
"Also published as a complete issue of the journal Early child development and care, volume 2, number 2 (1973)."
International monograph series on early child care ; v. 2