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Liquid Oxygen Tank. en Warning signs on LOX tank of hospital de Warnschilder auf dem Flssigsauerstoffreservoir eines Krankenhauses own Stefan Bellini WTFPL Liquid oxygen Files by User Stefan Bellini Photos taken in Lower Saxony Agaplesion Krankenhaus Neu Bethlehem Taken with Sony DSCHX Warning signs in Germany Caution signs Danger