@article{229733,
      author = {Baum, Rex L. and Johnson, Arvid M. and Fleming, Robert W.},
      url = {http://library.usi.edu/record/229733},
      title = {Measurement of slope deformation using quadrilaterals : a  description of a new method for measuring displacement at  the boundaries of a landslide and strain and tilt at the  surface of a landslide /},
      publisher = {U.S. G.P.O. ;},
      recid = {229733},
      pages = {v, 23 p. :},
      address = {Washington :},
      year = {1988},
}