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- [44] To the 70th birthday of Professor Leonid Chernogor SPACE SCIENCE AND TECHNOLOGY-KOSMICNA NAUKA I TEHNOLOGIA, 2020, 26 (02): : 93 - 94
- [46] Celebrating academician Ionel Haiduc 70th birthday REVISTA DE CHIMIE, 2007, 58 (05): : 437 - 438
- [50] Professor Dr. Dietrich Geyer's 70th birthday JAHRBUCHER FUR GESCHICHTE OSTEUROPAS, 1998, 46 (04): : 633 - 633