00545nam a2200181Ia 450000500170000000800410001704000190005804100120007708200150008910000200010424500470012426000390017130000430021050400490025365000150030265100360031785000100035320220805103436.0131103s9999    xx            000 0 und d  aLoreto College  aEnglish  a551.7bDUN  aDunbar, Carl O.  aPrinciples of stratigraphycCarl O. Dunbar  aNewYorkbJohn Wiley and sonsc1957  axii,356p.b ill.123 figures ,21 tables  aIncludes bibliographical referencesand index  aGeology -   aGeology - Historical geology -   aLCLIB