• A Field Stereophotographic Technique for Range Vegetation Analysis

      Pierce, W. R.; Eddleman, L. E. (Society for Range Management, 1970-05-01)
      Color negative film used in a camera with a lens providing a good depth of field at short focal distances has produced stereo color prints that permit accurate identification and measurement of range vegetation with a pocket stereoscope. This system can overcome many of the problems of inventorying a range.