20-63  Chinese Scientific Papers Taken by Major Foreign Referencing Systems by Discipline (2010)
	(piece)
Discipline	Precedence	Piece
		Total	SCI	EI	CPCI-S
Total		320354	121530	112070	86754
Mathematics	7	18859	6211	11922	726
Mechanics	8	11425	444	10138	843
Information, Systems Science	12	8695	642	2962	5091
Physics	2	32351	14707	12859	4785
Chemistry	1	44551	30898	12255	1398
Astronomy	28	1048	836	130	82
Earth Science	14	7691	4084	1750	1857
Biology	6	19004	16289	1511	1204
Preventive Medicine	26	1244	718	179	347
Basic Medicine	11	8707	5269	725	2713
Pharmacy	25	1396	1134	161	101
Clinical Medicine	10	9527	7767		1760
Traditional Chinese Medicine	35	450	281		169
Special Medicine	38	333	332		1
Agriculture	22	3227	1996	467	764
Forestry	39	140	126		14
Livestock, Veterinary Medicine	33	578	573		5
Aquatic	36	353	345		8
Surveying & Mapping	30	626		622	4
Material Science	5	28158	8653	11442	8063
Engineering & Basic Technology Science	17	5501	1311	3743	447
Mining	37	345	77	217	51
Energy	19	4665	941	1310	2414
Metallurgy, Metallography	23	3129	1516	1264	349
Machinery, Instrument	9	10385	1652	6017	2716
Power & Electrical Engineering	21	3986	8	3936	42
Nuclear Technology	34	495	172	121	202
Electronics, Communication & Automation	4	29068	5070	7867	16131
Computer	3	29426	2241	5836	21349
Chemical Engineering	20	4443	1413	2958	72
Light Industry & Textile Industry	40	103		76	27
Food	29	1038	611	423	4
Civil Construction	13	8571	791	5006	2774
Water Conservancy	32	612	73	427	112
Transportation	27	1107	20	1083	4
Aviation and Aerospace	24	1841	318	931	592
Environment	15	6075	3729	709	1637
Security	31	615	4	611
Management Science	18	5003	185	2161	2657
Others	16	5583	93	251	5239
a) SCI refers to Science Citation Index, EI refers to Engineering Index, and CPCI-S refers to Conference Proceedings Citation Index-Science.