Friedrich Ratzel died in 1904.
Friedrich Raschig died on 1928-02-04.
Friedrich Kiel died in 1885.
Friedrich Blume died in 1976.
Friedrich Schlichtegroll died in 1822.
Friedrich Brentel died in 1651.
Friedrich Frisius died in 1970.
Friedrich Ratzel was born in 1844.
Max-Peter Ratzel was born in 1949.
Friedrich Kiel died in 1885.
Friedrich Schlichtegroll died in 1822.
Friedrich Schlemm died in 1858.
Friedrich Frisius died in 1970.
Friedrich Weinreb died in 1988.
Friedrich Brentel died in 1651.
Friedrich Rainer died in 1947.
Friedrich Paulsen died in 1908.
Friedrich Münzer died in 1942.
Friedrich Weinbrenner died in 1826.