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- [4] WATER-PURIFICATION SYSTEMS AND RECOMMENDATIONS FOR FLUORIDE SUPPLEMENTATION JOURNAL OF DENTISTRY FOR CHILDREN, 1991, 58 (05): : 405 - 408
- [8] SYMPOSIUM ON WATER-PURIFICATION SVENSK PAPPERSTIDNING-NORDISK CELLULOSA, 1975, 78 (18): : 633 - 638