Effect of the catastrophic flood of  December 1966 North Rim area, Eastern grand canyon Arizona 
/ United State Government Printing Office 
 - Washington D C:       United State Government Printing Office,                       1977 
 - 43p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Language
<br/><br/><label>Subjects--Index Terms: </label>Water 
<br/><br/><label>Universal Decimal Class. No.: </label>627.5  / L7