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MLA Citation

    J.G. Ning et al.. “Control mechanisms and design for a 'coal–backfill–gangue' support system for coal mine gob–side entry retaining.” International journal of oil, gas and coal technology, vol. 18, 2018, pp. 444–466. http://access.bl.uk/ark:/81055/vdc_100076199507.0x00001e
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