Overview of drought and hydrologic conditions in the United States and southern Canada : water years 1986-90 /
Holmes, Sandra L.
Geological Survey (U.S.)
[Reston, Va.?] : U.S. Department of the Interior, U.S. Geological Survey ; Denver, CO : For sale by the Branch of Distribution,
1992.
Shipping list no.: 92-0718-P.
Includes bibliographical references (p. 18-19).
Droughts
Droughts
Hydrology
Hydrology