References
^ Kemp, William (2014). Biodiesel Basics: A Video Introduction to Mirco-scale Biodiesel Production, Aztext Pr. BiggerBooks. ISBN 9780973323375 (revised Nov 2023)^ (2013). Biodiesel Basics: A Video Introduction to Mirco-scale Biodiesel Production ECampus. ISBN 9780973323375 (revised Jan 2023)
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