Beveridge, W I B  <br/><br/>
Art of scientific investigation 

 - London:   Mercury Books,   1961 
 - xii, 178p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Subjects--Index Terms: </label>Hypothesis 
<br/><br/><label>Universal Decimal Class. No.: </label>5.001.5  / J0;1