(comparative more ecoefficient, superlative most ecoefficient)
eco- + efficient
"ecoefficient." YourDictionary, n.d. Web. 17 December 2018. <https://www.yourdictionary.com/ecoefficient>.
ecoefficient. (n.d.). Retrieved December 17th, 2018, from https://www.yourdictionary.com/ecoefficient
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