R. Perkins
发表
L. Papile,
R. Perkins,
1985,
American journal of perinatology.
R. Perkins,
1979,
American journal of obstetrics and gynecology.
R. Perkins,
1971,
American journal of obstetrics and gynecology.
G. Williams,
R. Elser,
R. Perkins,
1981,
Obstetrics and gynecology.
V. Catanzarite,
M. L. Baker,
R. Perkins,
1986,
Obstetrics and gynecology.
R. Perkins,
1971,
American journal of obstetrics and gynecology.
R. Perkins,
1982,
American journal of obstetrics and gynecology.
R. Perkins,
1970,
American journal of obstetrics and gynecology.
R. V. Vande Wiele,
I. Dyrenfurth,
R. Jewelewicz,
1971,
American journal of obstetrics and gynecology.
R. Perkins,
M. Chin,
M. Mullin,
1978,
Obstetrics and gynecology.
R. Perkins,
1982,
Obstetrics and gynecology.
T. Zuck,
R. Perkins,
J. Bergin,
1973
.
R. Perkins,
1980,
Clinical obstetrics and gynecology.
R. Perkins,
1979,
Obstetrical & gynecological survey.
R. Perkins,
1987,
Developmental medicine and child neurology.
R. Perkins,
J. Imig,
1976,
American journal of obstetrics and gynecology.
R. Perkins,
1976,
American journal of obstetrics and gynecology.
R. Perkins,
L. Mercer,
S. Awadalla,
1986,
Obstetrics and gynecology.
R. Perkins,
1974,
Obstetrical & gynecological survey.
R. Perkins,
1996,
Obstetrics and gynecology.
R. Perkins,
1976,
American journal of obstetrics and gynecology.
R. Perkins,
2004,
Southern medical journal (Birmingham, Ala. Print).
R. Perkins,
1993
.
R. Perkins,
1987,
Obstetrics and gynecology.
B. Skipper,
R. Perkins,
T. Dunn,
1987,
Obstetrics and Gynecology.
B. Skipper,
R. Perkins,
Cooley Butler,
1987,
Obstetrics and gynecology.
R. Perkins,
1984,
American journal of obstetrics and gynecology.
R. Perkins,
1997,
American journal of obstetrics and gynecology.
R. Perkins,
1981,
Obstetrics and gynecology.
R. Perkins,
R. Perkins,
1980,
Clinics in perinatology.
R. Perkins,
1982,
American journal of obstetrics and gynecology.