Text ( visual ) : unmediated Perspectives in western civilization : essays from Horizon / William L. Langer, editor. -- v. 1 ; v. 2. -- New York : American Heritage Pub. Co , c1972. -- 2 v. : ill. ; 23 cm. -- ISBN 006043841X ; 0060438355 ; (BA19476633) ; https://ci.nii.ac.jp/ncid/BA19476633 Author Heading(s): Langer, William L. (William Leonard). -- Classification(s): LCC : D6 ; DC : 940/.08. -- Subject Heading(s): LCSH : Europe -- History