共 26 条
[21]
SHAW AB, 1964, TIME STRATIGRAPHY
[22]
SRINIVASAN MS, 1981, SOC EC PALEONTOLOGIS, V32, P395
[23]
SRINIVASAN MS, 1981, MAR MICROPALEONTOL, V6, P493
[25]
Wedepohl K.H., 1969, HDB GEOCHEMISTRY, VII -1