首字母:O  (外文资源库)
1 OCLC/FirstSearch:ArticleFirst [详细介绍]
2 OCLC/FirstSearch:ClasePeriodica [详细介绍]
3 OCLC/FirstSearch:ECO [详细介绍]
4 OCLC/FirstSearch:ERIC [详细介绍]
5 OCLC/FirstSearch:Ebooks [详细介绍]
6 OCLC/FirstSearch:GPO 美国政府出版物数据库 [详细介绍]
7 OCLC/FirstSearch:MEDLINE [详细介绍]
8 OCLC/FirstSearch:OAlster [详细介绍]
9 OCLC/FirstSearch:PapersFirst [详细介绍]
10 OCLC/FirstSearch:Proceedings [详细介绍]
11 OCLC/FirstSearch:SCIPIO 艺术品和珍本拍卖目录数据库 [详细介绍]
12 OCLC/FirstSearch:WorldCat [详细介绍]
13 OCLC/FirstSearch:WorldCatDissertations [详细介绍]
14 OCLC:FirstSearch [详细介绍]
15 OSA(美国光学学会) [详细介绍]
16 Ovid---BIOSIS Previews(BA网络版) <1995 至今> [详细介绍]
17 Ovid---Books [详细介绍]
18 Ovid---Drug Information Full Text美国药物信息全文数据库 [详细介绍]
19 Ovid---EBM Reviews - Health Technology Assessment [详细介绍]
20 Ovid---EBM Reviews: ACP Journal Club [详细介绍]
21 Ovid---EBM Reviews: Cochrane Central Register of Controlled Trials [详细介绍]
22 Ovid---EBM Reviews: Cochrane Database of Systematic Reviews [详细介绍]
23 Ovid---EBM Reviews: Database of Abstracts of Reviews of Effectiveness [详细介绍]
24 Ovid---EMBASE <1974 to 至今> [详细介绍]
25 Ovid---International Pharmaceutical Abstracts 国际药学文摘数据库<1970 至今> [详细介绍]
26 Ovid---MEDLINE [详细介绍]
27 Ovid---MEDLINE In-Process & Non-Indexed Citations [详细介绍]
28 Ovid---OLDMEDLINE [详细介绍]
29 Ovid---Ovid Journals Full Text [详细介绍]
30 Oxford Journals [详细介绍]
31 Oxford Scholarship Online(牛津在线学术专著数据库) [详细介绍]