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	Otro Traga-aldaba (Another "Traga-aldaba"), 1971 Copper plate etching, engraving, aquatint, and drypoint on paper, sheet 29 1/2 x 19 5/8 inches (74.9 x 49.8 centimeters), copper plate 18 5/8 x 12 5/8 inches (47.3 x 32.1 centimeters)