unmachined
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unmachined — adj. * * * … Universalium
unmachined — adj … Useful english dictionary
Model engineering — Stuart Turner No.10 V, built from castings. A typical beginner s project. Model engineering is the hobby of constructing machines in miniature. The term was in use by 1888.[1] There is some debate about the appropriateness of the term. Some say… … Wikipedia
Natural resource economics — Economics … Wikipedia
