Lewis, W.B. <br/><br/>
Calculated reactivity changes in the long irradiation of natural uranium [supplement to DR-21]. 

 - Chalk River :  AECL,  1955. 
 - i-x, 5 p. 
<br/><br/><label>ISSN: </label>0067-0367 
<br/><br/><label>Standard No.: </label>AECL-188 DR-28