Caprock General 114865 11 watt Circular Fluorescent lamp for Desktop Magnifying Lamps, 6500 Degrees Daylight Illumination : Amazon.co.uk: Lighting
60 watt Warm White T5 Circular Fluorescent Tube
Project 'Green' House #1: LED replacement lighting for circular fluorescent tubes // DavidJB.com // Python, Technology, Web, Linux, and more, by David Beitey
Circular Fluorescent Tube FC60W/840 G10Q T9 Cool White: BELL