Mining the earth /
Young, John E. 1963-
Mining the earth / John E. Young ; Ed Ayres, editor. - Washington, D.C. : Worldwatch Institute, c1992. - 53 p. ; 22 cm. - Worldwatch paper ; 109 .
"July 1992."
Includes bibliographical references (p. 46-53).
Mineração.
301
Mining the earth / John E. Young ; Ed Ayres, editor. - Washington, D.C. : Worldwatch Institute, c1992. - 53 p. ; 22 cm. - Worldwatch paper ; 109 .
"July 1992."
Includes bibliographical references (p. 46-53).
Mineração.
301