http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
A bibliography of programms and presentation devices
268.975 -- HENDERSHOT, Carl H.: -- Programmed Learning:A bibliography of -- programms and presentation devices.[Lose- -- blattausg.]4.ed.suppl.indicated. - Bay -- City:Selbstverl.1971.8° -- 1976:6512(mit Suppl.) -- Pe.