共 7 条
- [1] DOWNS HD, 1970, GAS CHROMATOGRAPHY A
- [3] KING WJ, PRIVATE COMMUNICATIO
- [4] LI NN, 1970, PROGR SEPARATION PUR, V3, P153
- [6] A PROCEDURE FOR ANALYSIS OF IMPURITIES IN GRADE-A HELIUM IN PARTS-PER-BILLION RANGE [J]. JOURNAL OF GAS CHROMATOGRAPHY, 1965, 3 (05): : 165 - &
- [7] SCOTT FI, 1970, AM LAB, V2, P43