A Study of the Cretaceous-Tertiary unconformity in the Piceance Creek Basin, Colorado : the underlying Ohio Creek Formation (Upper Cretaceous) redefined as a member of the Hunter Canyon or Mesaverde Formation /

Autor Johnson, Ronald Carl, 1950-, May, Fred E.
Vydáno 1980

Geology of the Round Bay quadrangle, Anne Arundel County, Maryland /

Autor Minard, James P.
Vydáno 1980