Joung, J. E.
Mining the earth / J. E. Joung - New York : Worldwatch Institute (WI) , 1992 - 53p. : ill. ; 20 cm. - Worldwatch paper No. 109 .
Includes bibliographical references.
Mining
US WI P-109
Mining the earth / J. E. Joung - New York : Worldwatch Institute (WI) , 1992 - 53p. : ill. ; 20 cm. - Worldwatch paper No. 109 .
Includes bibliographical references.
Mining
US WI P-109