C. Wittke
发表
C. Wittke,
L. G. V. Velde,
1932
.
C. Wittke,
1949
.
C. Wittke,
Albert A. Scholz,
1952
.
C. Wittke,
1929
.
R. Billington,
C. Wittke,
1953
.
Donald N. Barrett,
C. Wittke,
1957
.
C. Wittke,
Rachel Henning,
1964,
The International Migration Digest.
C. Wittke,
1971
.
C. Wittke,
1958
.
William T. Utter,
F. P. Weisenburger,
J. Monaghan,
1941
.
C. Wittke,
1940
.
C. Wittke,
1974
.
H. Perkins,
C. Wittke,
1942
.
C. Wittke,
A. Dewey,
1930
.
C. Wittke,
1929
.
Carl Wittke,
C. Wittke,
1940
.
C. Wittke,
1941
.
C. Wittke,
1963
.
O. Handlin,
C. Wittke,
1952
.