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	Ovalo IV (Oval IV), 1967 (second version) Two-color woodcut on paper (two cedar woodblocks, one printed in black and another printed in purple), unique impression, sheet 31 1/2 x 23 1/8 inches (80 x 58.7 centimeters), image 26 1/2 x 16 15/16 inches (67.3 x 43 centimeters)