Fisher, R.A. <br/><br/>
Statistical methods for research workers 

 - Ninth 
 - Oliver and Boyd   London  1944 
 - 350p.  Table 
<br/><br/><label>Nat. Bib. No.: </label>1408 
<br/><br/><label>Universal Decimal Class. No.: </label>519.25  / PIS