@article{18615,
      note = {On cover: 2020 AD, the next half-century in the Ohio River  basin.},
      url = {http://library.usi.edu/record/18615},
      title = {2020 AD : a survey of the Ohio River basin (excluding the  Tennessee River basin) : its assets, its problems, its  future requirements and what can be done about them.},
      publisher = {U.S. Army Corps of Engineers, Ohio River Division,},
      recid = {18615},
      pages = {46 p. :},
      address = {[Cincinnati :},
      year = {1970},
}