01293nam 2200349Ka 450 991069672800332120080716084742.0(CKB)5470000002381594(OCoLC)234073034(EXLCZ)99547000000238159420080716d1982 ua 0engtxtrdacontentcrdamediacrrdacarrierElectromagnetic surface fields due to a magnetic dipole buried in a three-layered earth[electronic resource] /by Steven M. Shope[Washington, D.C.?] :U.S. Dept. of the Interior, Bureau of Mines,[1982]22 pages digital, PDF fileReport of investigations ;8702Title from title screen (viewed on July 15, 2008).Mine communication systemsMine rescue workEquipment and suppliesMine communication systems.Mine rescue workEquipment and supplies.Shope S. M(Steven M.)1418790United States.Bureau of Mines.GPOGPOBOOK9910696728003321Electromagnetic surface fields due to a magnetic dipole buried in a three-layered earth3531213UNINA