@Book{023906421,
author="Knopp, Werner",
title="Preu{\ss}ens Wege, Preu{\ss}ens Spuren: Gedanken {\"u}ber einen versunkenen Staat",
year="1981",
publisher="Droste",
address="D{\"u}sseldorf",
keywords="Prussia (Germany)History",
note="Werner Knopp",
isbn="3770006003",
language="German"
}