@article{,
      note = {"November 2003."},
      author = {Hansen, David J.},
      url = {http://library.usi.edu/record/283893},
      title = {Procedures for the derivation of equilibrium partitioning  sediment benchmarks (ESBs) for the protection of benthic  organisms PAH mixtures / [microform] :},
      publisher = {U.S. Environmental Protection Agency, Office of Research  and Development, National Health and Environmental Effects  Research Laboratory, Atlantic Ecology Division ;},
      number = {EPA/600/R-02/013},
      recid = {283893},
      pages = {1 v. (various pagings) :},
      address = {Narragansett, RI :},
      year = {2003},
}