Hartley H.O and Fitch E.R. <br/><br/>
New Statistical Table No XV From Biometrika  New Tables of  Statistical Functions,No.XV  Textual Documents 

 - 1951. 
 - London:  University College,  1951. 
 -  01328-A. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Statistics, Statistical Functions.