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

 - Oxford:   Pergamon Press,   1960 
 - xvii, 227p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research  
<br/><br/><label>Subjects--Index Terms: </label>philosophy Planning of research 
<br/><br/><label>Universal Decimal Class. No.: </label>5.001.5  / K0