Soil Science Society of American Proceedings 
/by Soil Science Society of America 
 - Madison, Wis.:  Soil Science Society of America,  1936-1976 
 - v. 
 - Bimestral 
 - Anual 
 - v.39 n.3,1975 
<br/><br/><label>ISSN: </label>0038-0776 
<br/><br/><label>LCCN: </label>91056