@book{UBHD-1415067, author={Olb, Max}, title={Die pf{\"a}lzische Tonindustrie}, edition={[Maschinenschr.]}, year={1922}, pages={153 Bl.}, language={ger}, school={Heidelberg, Univ., Diss}, library={UB [Signatur: W 693] ; UB [Signatur: W 693 A]}, }