Whitney, Milton <br/><br/>
Field operations of the Bureau of Soils: with accompanying papers by assistants in charge of field parties 

 - Washington, D.C.  U.S. Department of Agriculture, Bureau of Soils  1900 
 -  láms. 
<br/><br/> La Biblioteca tiene los años: 1901 y 1902 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SUELOS
<br/><br/><label>Subjects--Geographic Terms: </label><br/>ESTADOS UNIDOS
<br/><br/><label>Universal Decimal Class. No.: </label>A/631.470973/W55