Foundations of the unity of science :  toward an international encyclopedia of unified science / 
edited by Otto Neurath, Rudolf Carnap, Charles Morris. 
 - Chicago ;  London :  University of Chicago Press,  1955-. 
 - 2 v. ;. 
<br/><br/> V. 1, nos. 1-10. - v. 2, nos. 1-9. 
<br/><br/><label>ISBN: </label>0226575888 (v. 2) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Encyclopedias.