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  • (cur | prev) 07:49, 5 October 2021 Designing Buildings (Talk | contribs) (357 bytes) (Life Safety and Firefighting Power Supplies, second edition (BG 70/2021) was written by Tony Mayo and published by BSRIA in September 2021. source: https://www.bsria.com/uk/product/rk75yr/life_safety_and_firefighting_power_supplies_bg_702021_a15d25e1/)
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