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CONTRIBUTIONS TO VIRGINIA GEOLOGY, NO.3
VIRGINIA. DEPT. OF CONSERVATION AND ECONOMIC DEVELOPMENT. DIVISION OF MINERAL RESOURCES.
出版
VIRGINIA. Department OF CONSERVATION AND ECONOMIC DEVELOPMENT. DIVISION OF MINERAL RESOURCES
, 1978
URL
http://books.google.com.hk/books?id=mWIzzwEACAAJ&hl=&source=gbs_api