Donnan, William W. <br/><br/>
Report on drainage investigation in irrigated areas of Imperial Valley, Calif.., 1941-51; a to 10-year summary 

 - Washington :  U.S. Department of Agriculture Soil Conservation Sevice,  1954 
 - 69 p.  : gráfs. 
 - Bulletin SCS-TP-120 .
 - Bulletin SCS-TP-120 .
<br/><br/>Enc. con otro impreso similar 
<br/><br/><label>LCCN: </label>20938 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Drenaje.
<br/><br/><label>Dewey Class. No.: </label>631.4  / B7