共 10 条
- [1] EBERSOLE ER, 1959, IDO12023 US AT EN CO
- [3] Lyakhovich V., 1961, GEOCHEMISTRY, V6, P495
- [6] PREPARATION OF CARRIER-FREE THORIUM-234 TRACER [J]. ANALYTICAL CHEMISTRY, 1964, 36 (03) : 675 - &
- [9] SILL CW, 1963, IDO12034 US AT EN CO
- [10] STEVENS RE, 1960, 1113 US GEOL SURV B