Systems analysis in agricultural management 

 - New York   John Wiley & Sons   1971 
<br/><br/><label>ISBN: </label>0 471 20930 9 
<br/><br/><label>LC Class. No.: </label>658.93/DEN  / 2 
<br/><br/><label>Dewey Class. No.: </label>658.93/DEN  / 2