http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
The Organization of instruction meterials with special relation to the elementary school curriculum
HECKERT, J.W.: -- The Organization of instruction meterials -- with special relation to the elementary -- school curriculum..-New York 1917. -- Diss.New York,Columbia Univ. -- AB/Li