000 00247nam a2200097 4500
999 _c334469
_d334469
082 _a551.41
_bTHO.P
100 _aThornbury, William D.
245 _aPrinciples of Geomorphology
_cThornbury, William D.
260 _aLondon
_c1961
_bWiley
942 _cBK