TY - RPRT TI - Llano Grande Lake bottom sediments; a chronicle of water-quality changes in the Arroyo Colorado, South Texas, 1989-2001 AU - Barbara June Mahler AU - Peter C. Van Metre PY - 2002 DO - 10.3133/fs06502 UR - https://pubs.usgs.gov/publication/fs06502 ID - fs06502 ER -