Frank, Philipp G, Ed. <br/><br/>
Validation of scientific theories / 
Frank, Philipp G, Ed. 
 -  Collier Books Inc., New York,  1961 
 - p. ;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pure sciences - Philosophy & theory
<br/><br/><label>Dewey Class. No.: </label>501 FRA-V