000 00272nam a2200121Ia 4500
020 _a0471861901
100 _aWilliam D Thornbury
245 _aPrinciples of Geomorphology
250 _a2nd
260 _c1969
_bJohn Wiley & Sons
_aNew York
300 _axi+594
942 _cBK
999 _c7862
_d7862