共 6 条
[1]
COOPER LHN, 1955, J MAR RES, V14, P347
[2]
Dietrich G., 1956, DTSCH HYDROGR Z, V9, P78
[5]
ERICSON DAVID B., 1956, MICROPALEONTOLOGY, V2, P257, DOI 10.2307/1484180