WITTGENSTEIN, L. Prototractatus. An early version of Tractatus Logico-Philosophicus. Ed. By B.F. McGuinness, (a.o.). With a transl. by D.F. Pears, B.F. McGuinness, an histor. introd. by G.H. v. Wright and a facs. of the author's ms. Lond., (1971). (6), 256 pp. Sm-4°. Ocl. w. dust-j. (Dust-j. slightly sunned and a bit dam. in places, but a v.g. copy).