Coal_bituminous.jpg (360 × 308像素,文件大小:39 KB,MIME类型:image/jpeg


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Bituminous coal

Source: http://resourcescommittee.house.gov/subcommittees/emr/usgsweb/photogallery/ archive copy at the Wayback Machine ; English Wikipedia, original upload 3 August 2004 by Chris 73

Public domain This image is a work of the "Minerals in Your World" project, a cooperative effort between the United States Geological Survey and the Mineral Information Institute. The images were featured in the "Minerals and Materials Photo Gallery" on the website of the U.S House Subcommittee on Energy and Natural Resources. As a work of the U.S. federal government, the image is in the public domain in the United States.


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Bituminous coal

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烟煤 简体中文(已转写)

媒体类型 简体中文(已转写)

image/jpeg

校验和 简体中文(已转写)

708004561ccecb6888ee6297b379ce0b092c5dfd

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39,477 字节

308 像素

360 像素

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当前2005年10月2日 (日) 03:182005年10月2日 (日) 03:18版本的缩略图360 × 308(39 KB)Saperaud~commonswikiBituminous coal Source: http://resourcescommittee.house.gov/subcommittees/emr/usgsweb/photogallery/ ; English Wikipedia, original upload 3 August 2004 by Chris 73 {{PD-USGov-Interior-USGS-Minerals}} Category:coal [[en:Image:{

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