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Underground gasification of coal :hydraulic fracturing as method of preparing a coalbed

Simulated underground gasification of coal and electrolinking- carbonization method of preparing path in a coalbed

Underground gasification of coal :operation of multiple-path system

Underground gasification of coal :second experiment in preparing a path through a coalbed by hydraulic fracturing

Underground gasification of coal with oxygen-enriched air

Underground gasification of coal, 1945-60 :a bibliography

Fly ash as a coagulant aid in water treatment

Fly ash utilization;a summary of applications and technology,

Turf soil modification with sintered fly ash

Reclamation of acidic coal-mine spoil with fly ash

Fly ash-rubber mixtures :studies on skid resistance and durability


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