@book{,
address  = {Köln},
author = {},
keywords = {Erkenntnistheorie},
editor = {Ralfs, Günter; Glöckner, Hermann},
series = {},
title={Stufen des Bewusstseins. Vorlesungen zur Erkenntnistheorie},
uniqueid = {2586500},
url = {http://opac.regesta-imperii.de/id/2586500},
year = {1965}
}