@misc{Bertram_A_(fl._1870-1886)_Zur,
 author={Bertram, A (fl. 1870-1886)},
 address={Elbing},
 howpublished={online},
 publisher={Verlag von C. Weissner},
 language={ger},
 type={broszura},
 title={Zur Weichsel-Nogat-Regulirung},
}