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Geophysical and Geochemical Exploration  1988, Vol. 12 Issue (5): 393-396    DOI:
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THE EFFECTIVENESS OF EXTREMELY LOW FREQU-ENCY METHOD IN RECON-NAISSANCE OF POLYMETA-LLIC ORE RESOURCES
Wang Fengwen, Zhang Demin
No.4 Geological Party, Burean of Gelolgy and Mineral Resources of Hebei Province
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