@book{UBHD-1458568, author={Isenburg, Wilhelm Karl zu}, title={Das Problem der Rassenreinheit}, publisher={Beyer}, address={Langensalza}, year={1933}, pages={21 S.}, language={ger}, number={ARRAY(0x5624a2596280)}, series={Friedrich Mann's p{\"a}dagogisches Magazin}, note={In Fraktur}, library={UB [Signatur: N 55-2::1387-88] ; GE [Signatur: Ne 150] ; JU [Signatur: JU/NQ 2340 E65]}, }