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Efficiency Definition & Meaning - Merriam-Webster
EFFICIENCY | English meaning - Cambridge Dictionary
Efficiency: What It Means in Economics, the Formula To Measure It
EFFICIENCY | definition in the Cambridge English Dictionary
EFFICIENCY Definition & Meaning | Dictionary.com
Efficiency - Wikipedia
efficiency noun - Definition, pictures, pronunciation and usage …
Efficiency Definition & Meaning | Britannica Dictionary
EFFICIENCY definition and meaning | Collins English Dictionary
efficiency, n. meanings, etymology and more - Oxford English …
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