Biogas 2: Building a Better Biogas Unit /F3028: Building a Better Biogas Unit by Food and Agriculture Organization o... 15 January 1986

Food and Agriculture Organization of the United Nations  Food & Agriculture Organization of the United Nations (FAO)
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Optics For Dummies by Galen C. Duree, 9781118017234 27 July 2011

Galen C. Duree  John Wiley & Sons Inc
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The Light Bulb by Chris Oxlade, 9781406222715 4 August 2011

Chris Oxlade  Capstone Global Library Ltd
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Popular Art Deco Lighting: Shades of the Past by Herb Millman, 9780764320439 15 May 2004

Herb Millman  Schiffer Publishing Ltd
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Electronic and Electrical Engineering: Principles and Practice (3rd Revised edition) by Lionel Warnes, 9780333990407 13 December 2002

Lionel Warnes  Palgrave Macmillan
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