@book{Xirau, author = {Xirau, Ram{\´o}n de}, title = {Ciudades, M{\´e}xico (Alberto Dallal) 1969.}, language = {es} } @book{Wygotski, author = {Wygotski, L. S.}, title = {Denken und Sprechen, Frankfurt a. M. (Fischer) 1969.}, language = {de} } @book{Wolfson, author = {Wolfson, H. A.}, title = {The philosophy of spinoza. Volume one, New York (Schocken Books) 1969.}, language = {en} } @book{Wolfson, author = {Wolfson, H. A.}, title = {The philosophy of Spinoza. Volume two, New York (Schocken Books) 1969.}, language = {en} } @book{Wertschenow, author = {Wertschenow, L. H.}, title = {Kritika sozialnoi teorii Erika Fromma [Kritik der Gesellschaftstheorie Erich Fromms, Moskau 1969.}, language = {ru} } @book{Weiss, author = {Weiss, P.}, title = {Die Ermittlung. Oratorium in 11 Ges{\"a}ngen, Reinbek (Rowohlt Verlag) 1969.}, language = {de} } @book{Vranicki, author = {Vranicki, P.}, title = {Mensch und Geschichte, Frankfurt a. M. (Suhrkamp Verlag) 1969.}, language = {de} } @book{Tucker, author = {Tucker, R. C.}, title = {The Marxian revolutionary idea, New York (W W Norton \& Company) 1969.}, language = {en} } @book{Tschepnenko, author = {Tschepnenko, W. A.}, title = {Polititscheskaja philosophija i ekonomitscheskije bsgljage Erika Fromma [Politische Philosophie und {\"o}konomische Ansichten Erich Fromms, Moskau 1969.}, language = {ru} } @book{Toulmin, author = {Toulmin, S.}, title = {The philosophy of science, London (Hutchinson University Library) 1969.}, language = {en} }