Text ( visual ) : unmediated The National Gallery London / Philip Hendy. -- 3rd pbk. ed. (revised). -- London : Thames and Hudson , 1968. -- 320 p. : ill. ; 21 cm. -- (World of art library ; . Galleries). -- (BA62847808) ; https://ci.nii.ac.jp/ncid/BA62847808 Author Heading(s): Hendy, Philip, Sir