TY - RPRT TI - Use of radioimmunoassay as a screen for antibiotics in confined animal feeding operations and confirmation by liquid chromatography/mass spectrometry AU - M. T. Meyer AU - J.E. Bumgarner AU - J.L. Varns AU - J.V. Daughtridge AU - E.M. Thurman AU - K.A. Hostetler PY - 2000 DO - 10.1016/s0048-9697(99)00541-0 UR - https://pubs.usgs.gov/publication/70022762 ID - 70022762 ER -