<em>Comet Photo AG: Expo 1964 in Lausanne, 1964 (Com_C12-229-011, <a href="http://doi.org/10.3932/ethz-a-000654429">http://doi.org/10.3932/ethz-a-000654429</a>)
<em>Comet Photo AG: Expo 1964 in Lausanne, 1964 (Com_C12-229-011, <a href="http://doi.org/10.3932/ethz-a-000654429">http://doi.org/10.3932/ethz-a-000654429</a>)
