Mason, Robert D. <br/><br/>
Statistical techniques in business and economics / 
Robert D , Mason. 
 - USA:  Richard D Irwin,   1967. 
 - 520 P. ;  26 cm 
<br/><br/><label>ISBN: </label>
<br/><br/><label>Dewey Class. No.: </label>519.5  / MAS