http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Council for Elementary Science International
Eight times per year (Sept.-May, except Nov./Dec. combined), <-2004>
Eight issues a year (Sept.-July, combined Nov./Dec., Apr./May, issues), <2005->
Official journal of the Council for Elementary Science International.
The Jan. issues for 1985-1989 include a section called: NSTA supplement of science education suppliers, also published separately.
NSTA supplement of science education suppliers