· lucrärilor miniere, exploatäri subterane, exploatåri la zi, geologie, prospectiuni...
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- · lucrärilor miniere, Exploatäri subterane, Exploatåri la zi, Geologie, Prospectiuni exploräri Geologice, Universitatea Tehnica Petrosani 5 Limba romana Engleza Vorbire Scriere
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