共 9 条
[1]
AKERREN Y, 1950, J OBSTET GYN BRIT EM, V57, P705
[3]
Cole WCC, 1939, J AMER MED ASSOC, V113, P2038
[4]
GILLIES J, 1950, MODERN TRENDS OBSTET, P413
[5]
LULL C, 1948, CONTROL PAIN CHILDBI, P350
[7]
WYLIE WD, 1953, PRACTICAL MANAGEMENT, P103
[8]
1952, QUEEN CHARLOTTES TXB, P430
[9]
1955, MIDWIFERY, P477