Topping, David J et al. <br/><br/>
Computation and analysis of the instantaneous-discharge for the Colorado River at Lees Ferry, Arizona :   May 8, 1921, through September 30, 2000 / 
David J. Topping, John C. Schmidt, L. E. Vierra ; Geological Survey (U.S.). 
 - Reston, Virginia :  Denver, Co,   2003. 
<br/><br/><label>Subjects--Index Terms: </label>გეოლოგია ინფორმატიკა