00579cam a2200205 4500 377781058 TxAuBib 20170331120000.0 180219s2018||||||||||||||||||||||||ger|u 56606 Project Gutenberg PGUSA ger TxAuBib Hermann, Conrad, 1819-1897. Aesthetische Farbenlehre [Gutenberg] / Conrad Hermann. Project Gutenberg, 2018. Public domain in the USA. Text. Color. Aesthetics. http://www.gutenberg.org/ebooks/56606 TXTLL