Hempel C G <br/><br/>
Fundamentals of concept formation in empirical science 

 -  1952 
 - p.  cm. 
 - International encyclopaedia of unified science; 7 .
<br/><br/><label>Standard No.: </label>59468 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Philosophy of science
<br/><br/><label>Dewey Class. No.: </label>A:R191, J2