Coal resource classification system of the U.S. Bureau of Mines and U.S. Geological Survey / / a report published jointly by the U.S. Bureau of Mines and U.S. Geological Survey

• Pubblicazione: [Washington, D.C.] : , : U.S. Bureau of Mines : , : U.S. Geological Survey, , 1976; Washington : , : United States Government Printing Office
• Descrizione fisica: 1 online resource (v, 7 pages) : illustration
• Soggetto topico: Coal - United States; Coal
• Soggetto geografico: United States
• Soggetto genere / forma: Classification
• Note generali: "Definitions of coal resource classification terms used by the U.S. Bureau of Mines and U.S. Geological Survey."
• Altri titoli varianti: Coal resource classification system of the U.S. Bureau of Mines and U.S. Geological Survey
• Titolo autorizzato: Coal resource classification system of the U.S. Bureau of Mines and U.S. Geological Survey
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Lingua di pubblicazione: Inglese
• Record Nr.: 9910708463603321
• Lo trovi qui: Univ. Federico II