Text ( visual ) : unmediated Logical and philosophical papers, 1909-13 / Bertrand Russell ; edited by John G. Slater with the assistance of Bernd Frohmann. -- London : Routledge , 1992. -- lxix, 562 p., viii, [1] p. of plates : facsims., port. ; 24 cm. -- (The collected papers of Bertrand Russell / general editor, John Passmore ; v. 6). -- Includes bibliographical references (p. 529-549) and index. -- ISBN 0415084466 ; (BA19079666) ; https://ci.nii.ac.jp/ncid/BA19079666 Author Heading(s): Russell, Bertrand ; Slater, John G. (John Greer) ; Frohmann, Bernd. -- Classification(s): LCC : B1649 ; DC20 : 192 s ; DC20 : 192 ; NDC6 : 133.54 ; NDC8 : 133.5. -- Subject Heading(s): LCSH : Philosophy, Modern -- 20th century ; LCSH : Logic, Modern -- 20th century