@article{219611,
      recid = {219611},
      author = {Pereira, Wilfred E.},
      title = {Concentrations and mass transport of pesticides and  organic contaminants in the Mississippi River and some of  its tributaries... /},
      publisher = {U.S. Geological Survey :},
      address = {Denver, Colo. :},
      pages = {v. :},
      note = {Description based on: 1987-89 and 1991-92.},
      url = {http://library.usi.edu/record/219611},
}