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1987-12-17
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1985-05-02
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1987-02-05
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1989-02-16
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1985-10-31
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1984-02-22
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1983-04-30
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1985-08-08
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1982-07-28
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1982-06-11
Method of increasing yield of oil from coal hydrogenation
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1985-05-15
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1982-10-27
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1983-09-29
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1981-06-24
Method for producing premium coke from residual oil
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1983-02-09
Method for producing premium coke from residual oil
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1986-03-06
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1983-04-13
Method for recovering oil from an underground formation
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1982-08-06
Method for producing oil from rice embryo-buds
AU533623B2
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1983-12-01
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MY8500921A
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1985-12-31
A process for the dimetallization of hydrocarbon oils
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1986-11-20
A method for activating petroleum coke
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1985-12-19
Combination process for upgrading residual oils
AU4774185A
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1987-03-05
Method for cracking residual oils
JPS5783591A
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1982-05-25
Hydrocarbon obtaining method
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1982-12-15
Method of producing premium delayed petroleum coke