Freedman P <br/><br/>
Principles of scientific  research 
Freedman P 
 -  1949 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>59776 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Scientific research
<br/><br/><label>Dewey Class. No.: </label>Ab4, H9