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Sylvania T9 Circular 22w Magnifier Lamp Warm White (3000k) Fluorescent Tube, GR10q, 23 W : Amazon.co.uk: Lighting
Project 'Green' House #1: LED replacement lighting for circular fluorescent tubes // DavidJB.com // Python, Technology, Web, Linux, and more, by David Beitey
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Fluorescent 12" Circular Ring Light Bulb Round Tube 40w 5500k Daylight Colour Temperature 4 Pin T6 Light Lamp Replacement Spare: Amazon.co.uk: Electronics & Photo
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Eveready S5772 - 60w T9 400mm (40cm) Round Circular Fluorescent Tube White 3500k 5050028030621 | eBay
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