00362nam a22001211  4500040000800000082002800008100002200036245006600058260004200124300003000166650002700196650001700223  cDLC  a551 W.E.F 1961 A084 Or.10aKummel, Bernhard,10aHistory of the earth;ban introduction to historical geology.0 aSan Francisco,bW. H. Freemanc[1961]  axii,610 p.billus.c26 cm 0aGeology, Stratigraphic 0aPaleontology