Nitrate concentrations, 1936-99, and pesticide concentrations, 1990-99, in the unconfined aquifer in the San Luis Valley, Colorado
By: by Robert W. Stogner, Sr.
Contributors: National Water-Quality Assessment Program (U.S.); Geological Survey (U.S.)
Series: Water-resources investigations report -- 01-4131.
Publisher: U.S. Dept. of the Interior, U.S. Geological Survey; Information Services [distributor]
Place of publication: Albuquerque, N.M; Denver, CO
Number of pages: 12
Subjects: Groundwater -- Pollution -- Colorado.; Groundwater -- Pollution -- San Luis Valley (Colo. and N.M.); Nitrates -- Environmental aspects -- San Luis Valley (Colo. and N.M.); Pesticides -- Environmental aspects -- San Luis Valley (Colo. and N.M.)
Notes: "National Water-Quality Assessment Program."

Shipping list no.: 2001-0283-P.

Includes bibliographical references (p. 11-12).