Text ( visual ) : unmediated Hans Richter / by Hans Richiter ; edited by Cleve Gray. -- London : Thames and Hudson , 1971. -- 191 p : illus. (some col.), facsims., ports ; 29 cm. -- 193 illustrations, 33 in colour -- t.p. ; Illus. & facsims. on lining papers -- LC marc. -- ISBN 050023163X ; (BA37051964) ; https://ci.nii.ac.jp/ncid/BA37051964 Author Heading(s): Richter, Hans ; Gray, Cleve. -- Classification(s): LCC : NX93.R5 ; DC : 700/.924