Productivity and economic planning  
/ OECD 
 - Paris:   Organisation for Economics Co-operation and Development,   1970 
 - 108p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Subjects--Index Terms: </label>Consumption Nitrogenous 
<br/><br/><label>Universal Decimal Class. No.: </label> /