Coombs, Clyde H. <br/><br/>
A theory of data 

 - London  ; John Wiley & Sons  , 1964 
 - xviii,585p. 
<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer Science<br/>Data
<br/><br/><label>Dewey Class. No.: </label>005.7  / COO