@book{UBHD-3505616, edition={1. Aufl.}, publisher={vgs}, address={K{\"o}ln}, year={1987}, pages={342 S.}, language={ger}, isbn={3-8025-2170-6 and 978-3-8025-2170-6}, library={UB [Signatur: 83 B 1004::3 (1)]}, }