@book{UBHD-1052519, author={Barr, Alfred H.}, organization={The Museum of Modern Art (New York, NY) and Art Institute of Chicago}, title={Picasso; forty years of his art}, edition={4. ed., rev.}, publisher={The Museum of modern art}, address={New York}, year={1939}, pages={207, [1] S.}, language={eng}, library={UB [Signatur: 76 B 1724]}, }