TY - BOOK T1 - National Water-Quality Assessment Programwater use in the Rio Grande Valley, 1990 / DA - 1993] CY - [Reston, Va.?] : CY - [Denver, CO : AU - Richey, Steven F. AU - Ellis, Sherman R. VL - 93-456 CN - I 19.76: PB - U.S. Dept. of the Interior, U.S. Geological Survey ; PB - USGS Information Systems, PP - [Reston, Va.?] : PP - [Denver, CO : PY - 1993] N1 - Shipping list no.: 94-0789-M. N1 - Includes location map. ID - 240577 KW - Water quality KW - Water quality management TI - National Water-Quality Assessment Programwater use in the Rio Grande Valley, 1990 / ER -