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0200059243 20040816134706.0 s1972 vaua fr |000|||eng | NGL a633 Moffatt, David L. 地质测量同岩石力学和快速掘进计划用的电磁脉冲探测(地质异常区). chi Electromagnetic pulse sounding for geological surveying with application in rock mechanics & rapid excavation program / David L. Moffatt & L. Peters. Springfied, Va. : National Technical Information Service, 1972. [7], 108 p. : ill. AD-754 847 ; Prepare for Bureau of Mines Advanced Research Projects Agency. aPeters, L. NGL 293460 633 EL2 afqy b1 efqy0412