@article{121545,
      author = {Knittle, C. Edward. and Porter, Richard D.},
      url = {http://library.usi.edu/record/121545},
      title = {Waterfowl damage and control methods in ripening grain :  an overview /},
      publisher = {U.S. Dept. of the Interior, Fish and Wildlife Service,},
      recid = {121545},
      pages = {17 p. ;},
      address = {Washington, D.C. :},
      year = {1987},
}