International Congress of Soil Science (1961: Madison)   <br/><br/>
Transactions of the 7th international congress of soil science. Vol. 1: official communications  (Book) 

 - Gronigen  International Society of Soil Science  1961 
 - 675 p.  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil science--Congresses
<br/><br/><label>Universal Decimal Class. No.: </label>631.4:061.3(100) INT  / 10125