http://dewey.info/scheme/edition/e23/ en
338.2 Extraction of minerals
338.27 Products
338.2724 Coal--production economics 338.2728 Petroleum--extractive economics 338.273 Iron industry 338.2741 Gold--production economics 338.27421 Silver--production economics 338.274932 Uranium--production economics 338.27494 Rare earths--production economics
http://dewey.info/scheme/edition/e22/ de
338.2 Bergbau
338.27 Produkte
338.2724 Kohle—Produktionswirtschaft, . . . 338.2728 Erdöl (Naturprodukt)—mineralische Rohstoffwirtschaft, . . . 338.273 Eisenindustrie, . . . 338.2741 Gold—Produktionswirtschaft 338.27421 Silber—Produktionswirtschaft 338.274932 Uran—Produktionswirtschaft 338.27494 Seltenerdmetalle—Produktionswirtschaft
Dewey Decimal Classification
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