http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Philosophical and mathematical correspondence
Nachgelassene Schriften und Wissenschaftlicher Briefwechsel
Gottlob Frege ; edited by Gottfried Gabriel [and others] ; abridged from the German ed. by Brian McGuinness and translated by Hans Kaal.
Translation of selections from volume 2 of Nachgelassene Schriften und Wissenschaftlicher Briefwechsel.
Includes bibliographical references and index.