=LDR 22 4500 =001 4696 =082 04$a551.40973 THO =100 1\$aThornbury, William D. =245 10$aRegional Geomorphology of the United States =260 \\$aNew York :$bJohn Wiley,$c1965 =650 \0$aBooks =852 \\$bFreeman Library$h551.40973 THO$zNot located