Managing soil resources:   Managing soil resources to meet the challenges to mankind plenary session papers  
/ Transactions 12th International congress of soil science 
 - New Delhi:   12th International Congress of Soil Science,   1982 
 - 112p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Subjects--Index Terms: </label>Soil matter Arid Zones 
<br/><br/><label>Universal Decimal Class. No.: </label>I 631.4(082.2)   / M2.1