共 6 条
[1]
HAHN N, IN PRESS
[2]
KRAFT KH, 1973, THESIS GOTTINGEN
[3]
LETCHWORTH AT, 1971, J OBSTET GYN BR COMM, V78, P535
[4]
NITSCH J, 1973, THESIS GOTTINGEN
[5]
REICHELT E, 1973, THESIS GOTTINGEN
[6]
TEOH E S, 1971, Journal of Obstetrics and Gynaecology of the British Commonwealth, V78, P673