Intellectural investment in agriculture for econom 

 - Its doucmentation in agriculture and food, 60 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture Industry
<br/><br/><label>Dewey Class. No.: </label>X9(J):77-99N.1.N6, K1