Washington, D.C. : National Academy Press, 1999 . 1 online resource (xi, 247 p.) , "This study was supported by the Bureau of Land Management, Department of the Interior, under assistance award No. 1434-HQ-97-AG-01886"--T.p. verso. 0585126291 (electronic bk.) | 9780585126296 (electronic bk.)

Place Hold on Hardrock mining on federal lands