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- [2] INDUSTRY BASE FACES 20-PERCENT CUT [J]. AVIATION WEEK & SPACE TECHNOLOGY, 1995, 142 (05): : 22 - 23
- [6] AUSTRALIAN COAL PRODUCING STATE ENDORSES 20-PERCENT CO2 REDUCTION GOAL [J]. CLIMATE ALERT, 1989, 2 (02): : 3 - &
- [8] USING HELPERS COULD CUT CONSTRUCTION LABOR COSTS 20-PERCENT [J]. CIVIL ENGINEERING, 1982, 52 (10): : 44 - 46
- [9] COMPOSITES EXTEND ROTOR SHAFTS LIFE, CUT WEIGHT 20-PERCENT [J]. DESIGN NEWS, 1984, 40 (02) : 96 - 98