Anna N. Zytkow
1947
1947
1950
1946
1947
1964
1958
1955
1960
1959
1967
1946
1953
1951
1972
1973
1970
1970
1962
1955
1970
1968
1950
1964
1948
1968
1970
1948
1950
1960
1968
1952
1957
1959
1957
1966
1951
1971
1969
1963
1973
1952
1957
1949
1970
1945
1963
1953
1959
1950
1951