Spahr, N. E. (2000). Water quality in the Upper Colorado River Basin, Colorado, 1996-98. US Geological Survey circular 1214.
Chicago Style CitationSpahr, Norman E. "Water Quality in the Upper Colorado River Basin, Colorado, 1996-98." US Geological Survey Circular 1214 2000.
MLA CitationSpahr, Norman E. "Water Quality in the Upper Colorado River Basin, Colorado, 1996-98." US Geological Survey Circular 1214 2000.
Warning: These citations may not always be 100% accurate.