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  1. 1
    由 Grimshaw, H. C.
    出版 1956
    Sheffield : Ministry of Fuel and Power, Safety in Mines Research Establishment, 1956.
    1 online resource (16 p.)
    Center for Research Libraries: v.132 (Jun 1956)
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  2. 2
    由 Grimshaw, H. C.
    出版 1956
    Sheffield : Ministry of Fuel and Power, Safety in Mines Research Establishment, 1956.
    16 p. ; 24 cm.
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  3. 3
    由 Shaw, S. K.
    出版 1956
    Sheffield : Ministry of Fuel and Power, Safety in Mines Research Establishment, 1956.
    1 online resource (21 p.) : ill.
    Center for Research Libraries
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  4. 4
    由 Shaw, S. K.
    出版 1956
    Sheffield : Ministry of Fuel and Power, Safety in Mines Research Establishment, 1956.
    21 p. : ill. ; 24 cm.
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