Open AccessDevelopment of a Coal Quality Expert. Final technical progress report No. 12, [January 1--March 31, 1993]
Publication year - 1993
Language(s) - English
Resource type - Reports
DOI - 10.2172/10106398
Subject(s) - coal , engineering , unit (ring theory) , test (biology) , work (physics) , operations management , waste management , management , mathematics , mechanical engineering , geology , paleontology , mathematics education , economics