Balsthal, Lachstrocknerei Dyhrberg

<em>Schmid, Josef: Balsthal, Lachstrocknerei Dyhrberg, 26.03.1975 (Com_L24-0168-0003-0001, <a href="http://doi.org/10.3932/ethz-a-001031553">http://doi.org/10.3932/ethz-a-001031553</a>)