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Große liegende Kuh (Large Lying Cow) 1930 |
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Kleine Liegende Kuh II - Porzellankuh (Little Lying Cow II - Porcelaincow) 1936 |
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Mathematik-Kuh I (Mathematics Cow) 1946 |
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Zeichen einer Kuh I (Sign of a Cow I) 1946 |
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Zeichen eines Steppenrindes (Sign of a Cow) 1946 |
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