000 00266nam a2200121Ia 4500
100 _aThornbury,William.D.
942 _cBK
654 _a
245 _aprinciples of geomorphology
260 _aNew York
_bJohn Wiley
_c1954
082 _a551.4
300 _bHb
_aix,618
999 _c371356
_d371356
041 _aeng