@book{UBHD-1005515, title={§§ 18 und 19 GWB}, edition={3. Aufl.}, publisher={Heymann}, address={K{\"o}ln}, year={1974}, pages={122 S.}, language={ger}, isbn={3-452-17435-2 and 978-3-452-17435-2}, library={UB [Signatur: 2010 C 4021::7] ; GW [Signatur: GW/PE 750 M947(3)]}, }