Eklund, Gunnar <br/><br/>
Studies of selection bias in applied statistics 
/ By Gunnar Eklund 
. - Uppsala  : Almqvist & Wiksell, 1960
. - 144 p.  ; 23 cm. 
<br/><br/><label>Source: </label>15017  Ancien fonds 
<br/><br/><label>Universal Decimal Class. No.: </label>311.