User's manual for QWGRAF, computer programs for water-quality graphics
By: by James C. Schornick and Michael C. Place.
Contributors: Place, Michael C.
Series: U.S. Geological Survey water-resources investigations report ;; 97-4226; Water-resources investigations report ;; 97-4226.
Publisher: U.S. Dept. of the Interior, U.S. Geological Survey; U.S. Geological Survey, Branch of Information Services [distributor]
Published: 1998
Place of publication: Reston, Va; Denver, CO
Language: eng
Number of pages: 265
Subjects: Water quality -- Computer programs.; Computer graphics -- Computer programs.
Notes: Includes bibliographical references (p. 212).