R. Sayers
发表
J. Bloomfield,
W. S. Johnson,
R. Sayers,
1934
.
R. Sayers,
H. Proske,
1934
.
R. Sayers,
W. M. Gafafer,
Gertrud Kroeger,
1937
.
T. I. Edwards,
S. H. Webster,
R. Sayers,
1941
.
H. Schrenk,
R. Sayers,
W. Yant,
1936
.
R. Sayers,
H. Specht,
J. Miller,
1940
.
R. Sayers,
F. V. Meriwether,
1932
.
R. Sayers,
J. Miller,
W. Yant,
1934,
American journal of public health and the nation's health.
C. E. Couchman,
R. Sayers,
E. Kaplan,
1952,
Public health reports.
R. Sayers,
1925
.
R. Sayers,
H. Proske,
1934
.
R. R. Jones,
R. Sayers,
1938
.
R. Sayers,
J. Miller,
1935
.
R. Sayers,
J. W. Miller,
1936
.
J. Bloomfield,
E. Riley,
T. I. Edwards,
1939
.
R. Sayers,
1938
.
R. Sayers,
1933
.
R. Sayers,
1926
.
R. R. Jones,
R. Sayers,
1938
.
R. Sayers,
W. Yant,
B. G. Thomas,
2022
.
S. J. Davenport,
R. Sayers,
1925
.
L. B. Berger,
R. Sayers,
W. Yant,
1929
.
R. Sayers,
H. Dudley,
P. Neal,
1940
.
S. J. Davenport,
R. Sayers,
1927
.
R. Sayers,
1942
.
R. Sayers,
D. Harrington,
1921
.
R. Sayers,
W. Yant,
J. M. Valle,
1934
.
F. A. Patty,
H. Schrenk,
R. Sayers,
1936
.
R. Sayers,
W. Yant,
R. D. Leitch,
1930
.
J. Bloomfield,
R. Sayers,
1936,
American journal of public health and the nation's health.
J. Bloomfield,
R. Sayers,
F. Goldman,
1935
.
E. P. Pendergrass,
R. Sayers,
A. Lanza,
1935
.