共 7 条
- [2] COLEMAN DD, 1972, 8TH P INT C RAD CARB, pB50
- [3] NEW METHOD OF COLLAGEN EXTRACTION FOR RADIOCARBON DATING [J]. NATURE, 1971, 230 (5291) : 241 - &
- [4] LONGIN R, 1970, THESIS U LYON
- [5] MEGGERS BJ, 1965, SMITHSONIAN CONTR AN, V1
- [6] OBRIEN PJ, 1969, THESIS U ILLINOIS
- [7] RUBEY WW, 1952, 218 US GEOL SURV PRO