Von Helmholtz Hermann <br/><br/>
Epistemological writings. 

 - Holland  D Reidel Publishing          1977 
 - xxxvii,205p.  cm. 
 - Synthese library. .
<br/><br/><label>Standard No.: </label>138786 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>R2x, L7