共 25 条
[1]
BARR ML, 1955, MODERN TRENDS OBSTET, P117
[2]
Blechschmidt E, 1961, STAGES HUMAN DEV BIR
[3]
BOYD JD, 1955, MODERN TRENDS OBSTET, P60
[4]
BOYD JD, 1948, BRITISH OBSTETRICS G, P32
[6]
FELDMAN M, 1957, CLIN ROENTGENOLOGY D
[7]
Gillman Joseph, 1948, CONTRIBUTIONS TO EMBRYOLOGY [CARNEGIE INST OF WASHINGTON PUBL], V32, P81