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- [6] ULTRAHIGH PURITY GAS-DISTRIBUTION SYSTEMS JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS, 1989, 7 (03): : 2504 - 2507
- [10] PREVENTIVE MEASURES IN GAS-DISTRIBUTION NETWORK ERDOL & KOHLE ERDGAS PETROCHEMIE, 1977, 30 (06): : 280 - 280