共 5 条
[1]
BARCLAY AE, 1944, FOETAL CIRCULATION, P112
[2]
GARREY WE, 1937, AM J PHYSIOL, V119, P314
[3]
PATTEN BM, 1946, HUMAN EMBRYOLOGY, P185
[4]
Pickering J W, 1896, J Physiol, V20, P165
[5]
WINDLE WF, 1940, PHYSL FETUS, P17