The Federal lands since 1956 ; recent trends in use and management - Clawson, Marion 1905-; Clawson, Marion 1905- The Federal lands : their use and management; Resources for the Future (Washington Resources for the Future, 1967)
"The data and analyses in The Federal lands : their use and management, by Marion Clawson and Burnell Held, are updated through 1965 in this supplement."
Keywords: United States -- Public lands