@article{1976:reball:semantisch,
title = {Semantischer Bereich und Sachverhaltsbeschreibung von Dokumenteninhalten (Semantic field and subject description of document contents)},
year = {1976},
note = {},
journal = {KO KNOWLEDGE ORGANIZATION},
pages = {18--22},
author = {Reball, Siegfried},
volume = {3},
number = {1}
}