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GENETIC ANALYSIS AND ITS RESEARCH SIGNIFICANCE OF THE KAOLINITIC ROCK IN LOWER SHIHEZI FORMATION OF SOUTHEASTERN PART,NORTH CHINA BASIN
1991, 19(1): 6-10,71,72.
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RECOGNIZATION AND ANALYSIS OF OIL SOURCE IN TERTIAIY YANCHANGFORMATION AND JURASSIC YANAN FORMATION IN WEIBEI AREA
1991, 19(1): 11-14,71,72.
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OPTIMIZATION OF PAPAMETERS FOR EVALUATING STRUCTURE COMPLEXLTY IN COAL MINING
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1991, 19(1): 20-23,74,71,72.
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A PRELIMINARY STUDY ON EXINITE IN COALS IN GUANGXI BAISE BASIN
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1991, 19(1): 24-29,73,2,71,72.
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THE DISTRIBUTION FEATURE AND GENESIS STUDY OF SULPHUR IN No.2 COAL SEAM IN WESTERN HENAN PROVINCE
1991, 19(1): 36-40,71,72.
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THE FAILURE CHARACTERISTC OF RFD BEDS SOFT ROCK IN WATER AND SHAFTING PRACTICES
1991, 19(1): 41-46,71,72.
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THE CHARACTFRIS OF CTONIC FRACTURES AND WATER INFLOW CONTROL IN YANZHOU MINE AREA
1991, 19(1): 46-47,71,72.
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THE PRIMARY APPROACH TO THE DATA INTERPRETATION FOR RED IN THE SOUTHERN CHINA
1991, 19(1): 50-54,71,72.
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THE EXPERT SYSTEPM IN LOG DATAINTERPRETATION
1991, 19(1): 55-61,71,72.
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THE STUDY OE MTZ77S WIRELINE CORING PERCUSSION ROTATION DRILLIG TOOL
1991, 19(1): 64-66,71,72.
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