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- [3] PRESENT-DAY PRODUCTION METHODS JOURNAL OF THE AMERICAN PHARMACEUTICAL ASSOCIATION-PRACTICAL PHARMACY EDITION, 1945, 6 (04): : 104 - 109
- [7] NEW SEALING MATERIALS AT THE PRESENT-DAY JOURNAL OF JAPAN SOCIETY OF LUBRICATION ENGINEERS, 1984, 29 (05): : 321 - 326