21-51  Chinese Scientific Papers Taken by Major Foreign Referencing Systems by Discipline (2005)
					(piece)
Discipline	Precedence	Pieces
		Total	SCI	EI	ISTP
Total		152825	63150	60301	29374
Mathematics	8	6043	3063	2739	241
Mechanics	15	2852	369	2130	353
Information, Systems Science	20	1862	292	17	1553
Physics	2	16616	9351	5704	1561
Chemistry	1	27977	18656	8021	1300
Astronomy	30	523	339	96	88
Earth Science	9	4816	1989	1998	829
Biology	6	8039	4963	2627	449
Preventive Medicine	32	321	300	0	21
Basic Medicine	18	2240	1698	166	376
Pharmacy	27	886	864	0	22
Clinical Medicine	12	3677	2393	0	1284
Traditional Chinese Medicine	40	9	7	0	2
Special Medicine	33	253	253	0	0
Agriculture	25	1048	678	269	101
Forestry	38	76	46	0	30
Livestock, Veterinary Medicine	35	196	193	0	3
Aquatic	34	213	192	0	21
Surveying & Mapping	16	2720	2	127	2591
Material Science	5	12065	6657	3433	1975
Engineering & Basic Technology Science	23	1103	160	658	285
Mining	29	597	14	565	18
Energy	19	1937	119	1528	290
Metallurgy, Metallography	13	3494	1132	2007	355
Machinery, Instrument	11	3909	968	2041	900
Power & Electrical Engineering	7	7346	1502	5111	733
Nuclear Technology	31	333	58	149	126
Electronics, Communication & Automation	4	12668	444	7695	4529
Computer	3	13433	3844	3755	5834
Chemical Engineering	10	4348	1006	3069	273
Light Industry & Textile Industry	37	140	1	24	115
Food	36	185	89	64	32
Civil Construction	14	3052	352	2366	334
Water Conservancy	28	660	3	289	368
Transportaiton	22	1224	4	917	303
Aviation and Aerospace	26	951	65	873	13
Environment	17	2259	981	766	512
Security	24	1076	24	134	918
Management Science	21	1662	64	963	635
Others	39	16	15	0	1
a) SCI refers to Science Citation Index, EI refers to Engineering Index, and ISTP refers to Index to Scientific & Technical Proceedings.