Freedman, Paul. <br/><br/>
The principles of scientific research / 
Paul Freedman 
 - 2d ed. 
 - Oxford,  New York,  Pergamon Press  [1960] 
 - 227 p.  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research.
<br/><br/><label>Dewey Class. No.: </label>007  / FRE N50P