http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Introduction to the basic concepts and problems of modern logic
Einfuhrung in die Grundbegriffe und Probleme der modernen Logik. English
[by] G. Hasenjaeger ; [Translated from the German by E.C.M. Mays].