KAREL APPEL. Appel - Superpositions - Ariel 19 - Juin 1971. Paris: Galerie Ariel , 1971. 1st Edition. 311 x 250 Mm. Soft Cover. Fine Pages unnumbered, illustrated in colour plates and 2 lithographs in colour. - Appel - Superpositions - Ariel 19 - Juin 1971 - including the 2 litho's. The cover litho is very fine, slight wear in the edge and top corner, the interior litho as new.