@article{1975:gehring:das_stich,
title = {Das Stich- und Schlagwörterverzeichnis zur deutschen Ausgabe der Internationalen Patentklassifikation (The subject index to the German Edition of the Intern. Patent Class.)},
year = {1975},
note = {},
journal = {KO KNOWLEDGE ORGANIZATION},
pages = {73--80},
author = {Gehring, Gerhard},
volume = {2},
number = {2}
}