Dover Publications Inc 1959 in8. 1959. Broché.
Bon état cependant écorchure sur le haut du premier plat intérieur propre bonne tenue
London, Routledge & Kegan Paul, (1966). 8vo. Publishers cloth with dust jacket. XIII,250 pp. A fine and clean copy.
First edition. ""International Library of Philosophy and Scientific Method"".
New York, Dover, (1959). 8vo. Orig. printed wrappers. VIII,301,(14) pp.