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- [4] Innovative - now for 50 years Betonwerk und Fertigteil-Technik/Concrete Precasting Plant and Technology, 1997, 63 (08): : 58 - 64
- [8] 50 YEARS IN THE FOREST INDUSTRY - COMPETITION THEN AND NOW SVENSK PAPPERSTIDNING-NORDISK CELLULOSA, 1988, 91 (08): : 34 - 36