Scopus® (2,093,650)
MEDLINE (731,936)
Science Citation Index Expanded (122,814)
Complementary Index (60,854)
Academic Search Complete (57,304)
IEEE Xplore Digital Library (54,823)
OAIster (41,021)
Supplemental Index (29,536)
Directory of Open Access Journals (19,623)
ScienceDirect (18,766)
China Online Journals (Wanfang) (17,113)
Springer Nature Journals (15,278)
Gale Academic OneFile (11,608)
Journals@OVID (8,676)
MathSciNet via EBSCOhost (8,521)
arXiv (8,011)
SwePub (4,742)
Social Sciences Citation Index (2,876)
Gale General OneFile (2,684)
Business Source Complete (2,444)
eScholarship (2,045)
RePEc (1,467)
JSTOR Journals (1,304)
USPTO Patent Grants (995)
BioOne Complete (734)
J-STAGE (691)
De Gruyter Online (486)
NASA Technical Reports (449)
USPTO Patent Applications (448)
Education Source (374)
CINAHL Plus with Full Text (345)
Korea Citation Index (316)
SciTech Connect (314)
ACM Full-Text Collection (196)
Airiti Library eBooks & Journals - 華藝線上圖書館 (184)
Europeana (179)
DBPIA (177)
Digital Access to Scholarship at Harvard (DASH) (156)
TDX (150)
GeoScienceWorld (136)
Library, Information Science & Technology Abstracts (107)
SciELO (106)
ProjectMUSE (103)
Arts & Humanities Citation Index (102)
Communication & Mass Media Complete (94)
Academic Conferences in China (Wanfang) (90)
ASTM Compass (86)
ERIC (83)
Research Starters (57)
Emerald Insight (54)
MLA International Bibliography (49)
HeinOnline (45)
British Library EThOS (44)
Aerospace Research Central (42)
RISS - DDOD (Digital Dissertations On Demand) (41)
Regional Business News (36)
ClinicalTrials.gov (36)
Korean Studies Information Service System (33)
APA PsycArticles (22)
SpringerMaterials (21)
eArticle (20)
KERIS Theses & Dissertations (20)
Wiley Online Reference Works (18)
스콜라(Scholar) (18)
ASM Medical Materials Database (16)
JoVE Journal (15)
GOBI E-books (14)
BrillOnline Reference Works (13)
ERICdata Higher Education Knowledge (8)
Oxford Scholarship Online (8)
Cochrane Database of Systematic Reviews (7)
Persée (5)
University Press Scholarship Online (4)
AccessScience (3)
AccessEngineering (3)
Oxford Medicine Online (3)
OAPEN Library (3)
SveMed+ (3)
Naxos Music Library (2)
European Union Open Data Portal (2)
F1000Research (2)
Westlaw UK (1)
JoVE Science Education Database (1)
SSOAR – Social Science Open Access Repository (1)
E-LIS (Eprints in Library & Information Science) (1)
JoVE Encyclopedia of Experiments (1)