Paris, Hermann et Cie, 1946. 8vo. Orig. wrappers, uncut. (2),42,(1) pp.
First publication in the series 'La méthode générale des sciences positives - Actualités scientifiques et industrielles (1014) - Logique et méthodologie', edited by Thomas Greenwood.
Orig. full cloth. LVII,347 pp.
London, Routledge & Kegan Paul, (1949). 8vo. Publishers full cloth with dust jacket. Fine condition. LVII,344,7,(1) pp.