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- [2] 50 YEARS OF THE JOURNAL JOURNAL OF THE CANADIAN DIETETIC ASSOCIATION-REVUE DE L ASSOCIATION CANADIENNE DES DIETETISTES, 1989, 50 (01): : 5 - 5
- [4] 50 Years Ago in THE JOURNAL OF PEDIATRICS Light-Induced Seizures JOURNAL OF PEDIATRICS, 2015, 166 (02): : 256 - 256
- [5] 50 YEARS OF WELDING INSTITUTE METAL CONSTRUCTION AND BRITISH WELDING JOURNAL, 1973, 5 (01): : 3 - 6