000 00304nam a2200121Ia 4500
008 221001s1957 xx 000 0 eng d
082 _a551.7 DUN
100 _aDunbar, Carl O.
245 0 _aPrinciples of stratigraphy
260 _aNew York
_bJohn Wiley
_c1957
300 _aviii, 356p.
942 _2ddc
_cBK
999 _c28917
_d28917