TY - BOOK AU - Kalkhoff, Stephen J. AU - Kuzniar, Ronald L. CN - I 19.76: CY - Iowa City, Iowa : CY - Denver, Colo. : DA - 1994. ID - 219583 KW - Hydrology KW - Stream measurements KW - Agricultural chemicals N1 - Chiefly tables. PB - U.S. Geological Survey ; PB - USGS Earth Science Information Center, Open-File Reports Section [distributor], PP - Iowa City, Iowa : PP - Denver, Colo. : PY - 1994. T1 - Hydrologic data for the Big Spring Basin, Clayton County, Iowa, water year 1991 / TI - Hydrologic data for the Big Spring Basin, Clayton County, Iowa, water year 1991 / ER -