000 002680000a22001210004500
008 160512b1948 xxu||||| |||| 00| 0 eng d
041 _aeng
080 _a551.4
_bW6
942 _cBK
100 _aWorcester, P.G.
245 _aA textbook of geomorphology
260 _c1948
999 _c9241
_d9241