Thomas, Harold Edgar   1906-1993 <br/><br/>
Effects of drought in the Colorado River Basin / 
by H. E. Thomas. 
 -- Washington :   United States Government Printing Office,   1963 
 - 50 p. -- 
 (Geological Survey Professional Paper  ;  372-F).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Río Colorado ( Estados Unidos )<br/>Sequía
<br/><br/><label>Universal Decimal Class. No.: </label>556.167(73)