<em>Comet Photo AG: Panzer 61 in Aktion, 1964 (Com_M12-0346-0025-0001, <a href="http://doi.org/10.3932/ethz-a-000660168">http://doi.org/10.3932/ethz-a-000660168</a>)
<em>Comet Photo AG: Panzer 61 in Aktion, 1964 (Com_M12-0346-0025-0001, <a href="http://doi.org/10.3932/ethz-a-000660168">http://doi.org/10.3932/ethz-a-000660168</a>)
