000 002980000a22001330004500
245 _aA textbook of geomorphology
100 _aWorcester, Philip G.
250 _a2d ed.
260 _aToronto
_bVan Nostrand
_c1948
300 _a584 p.
080 _a551.4
_bW6
041 _aEN
942 _cBK
999 _c52304
_d52304