Robin Catalogue:
A. MS., notebook, n.p., 1903, pp. 1-26.
Improvement in reasoning requires, first of all, a study of deduction. For this, an unambiguous and simple system of...
From the Robin Catalogue:
A. MS., G-c.1905-1, pp. 1-134 (p. 27 and pp. 109-120 missing), with 40 pp. Of variants and 1 p. (“Contents of G”).
Published, in part, as 2.755-772,...