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- [3] DETERMINATION OF MERCURY AT PARTS-PER-BILLION LEVEL JOURNAL OF PAINT TECHNOLOGY, 1971, 43 (560): : 36 - &
- [5] DETERMINATION OF MERCURY AT PARTS-PER-BILLION LEVEL JOURNAL OF PAINT TECHNOLOGY, 1971, 43 (563): : 67 - &
- [6] A PROCEDURE FOR ANALYSIS OF IMPURITIES IN GRADE-A HELIUM IN PARTS-PER-BILLION RANGE JOURNAL OF GAS CHROMATOGRAPHY, 1965, 3 (05): : 165 - &