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THE ORIGIN OF THE MEMBER-DIVIDING SAND-STONE-CONGLOMERATE OF CESHUI FORMATION IN HUNAN PROVINCE
LIU Qin-fu, ZHANG Peng-fei
1991, 19(2): 6-11,71,72.
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ECOLOGY OF UPPER PERMIAN GIGANTOPTERIDES IN WESTERN GUIZHOU
GUO Ying-ting
1991, 19(2): 12-15,71,73,2.
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THE STUDY OF THE MAJOR GEOLOGICAL FACTORS CONTROLLING COAL-BEARING DEPOSITION IN PUBAI MINE AREA BY THE FACTOR ANALYSIS
LIU Lian-ding
1991, 19(2): 16-19,71,72.
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THE CHARACTERISTICS OF VITRINITE REFLECTANCE OF ANTHRACTIVE IN LIANYUAN DEPRESSION AND THEIR RELATION TO THE DEEP-SEATED FAULT STRUCTURE
WANG Wen-xia
1991, 19(2): 20-25,71,72.
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A PRIMARY STUDY OF COAL STRUCTURAL MODEL
ZHANG Dai-jun, XIAN Xue-fu
1991, 19(2): 32-35,71,72.
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TENTATIVE STUDY OF DEEP KARST TYPES AND THEIR DEVELOPING INTENSITY IN NORTH CHINA
XIANG Yuan-fa
1991, 19(2): 40-46,71,72.
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THE FORWARD CALCULATION OF TRANSIENT ELECTROMAGNETIC SOUNDING FOR A CENTER LOOP SYSTEM
FANG Wen-zao, LI Yu-guo
1991, 19(2): 49-53,71,72.
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THE RESEARCH OF REVERSE CIRCULATION DOWNHOLE DRILLING WITH DOUBLE-TUBE ROD
LI Shi-min, GUO Ke-qin
1991, 19(2): 56-58,71,72.
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THE STUDY OF CONTROL TECHNOLOGY OF BOREHOLE LEAKAGE
WANG Wen-chen
1991, 19(2): 62-65,71,72.
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