Frank, Philpp G. <br/><br/>
The Validation of Scientific theories. 

 - Collier Books  New York 
 - x, 220 p, :  ill, :  8 CM 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>MCE
<br/><br/><label>Dewey Class. No.: </label>500   / VAL