Freedman, Paul <br/><br/>
Principles of scientific research  

 - London:   Macdonald & Co. Ltd.,  1979 
 - 222p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Society 
<br/><br/><label>Subjects--Index Terms: </label>History  
<br/><br/><label>Universal Decimal Class. No.: </label>5.001.5  / H9