TY - RPRT TI - Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory-Determination of organochlorine pesticides and polychlorinated biphenyls in bottom sediment by dual capillary-column gas chromatography with electron-capture detection AU - William T. Foreman AU - Brooke F. Connor AU - Edward T. Furlong AU - Deborah G. Vaught AU - Leslie M. Merten PY - 1995 DO - 10.3133/ofr95140 UR - https://pubs.usgs.gov/publication/ofr95140 ID - ofr95140 ER -