Science Citation Index Expanded (52,476)
Scopus® (27,365)
MEDLINE (20,119)
MathSciNet via EBSCOhost (6,805)
Complementary Index (4,786)
Social Sciences Citation Index (4,462)
Academic Search Complete (4,378)
OAIster (3,661)
Korean Studies Information Service System (3,275)
Supplemental Index (2,977)
Directory of Open Access Journals (1,797)
ScienceDirect (1,593)
Springer Nature Journals (1,460)
Europeana (1,377)
Gale Academic OneFile (1,217)
Journals@OVID (1,036)
IEEE Xplore Digital Library (853)
SwePub (764)
USPTO Patent Grants (697)
arXiv (673)
DBPIA (604)
Gale General OneFile (420)
eScholarship (400)
Business Source Complete (265)
China Online Journals (Wanfang) (247)
JSTOR Journals (247)
Arts & Humanities Citation Index (203)
KERIS Theses & Dissertations (195)
Korea Citation Index (185)
RePEc (173)
Education Source (150)
스콜라(Scholar) (112)
NASA Technical Reports (110)
J-STAGE (89)
Airiti Library eBooks & Journals - 華藝線上圖書館 (85)
Digital Access to Scholarship at Harvard (DASH) (70)
USPTO Patent Applications (69)
Library, Information Science & Technology Abstracts (55)
eArticle (54)
BrillOnline Reference Works (53)
MLA International Bibliography (49)
Regional Business News (48)
BioOne Complete (44)
ProjectMUSE (38)
GOBI E-books (36)
ERIC (34)
Communication & Mass Media Complete (34)
De Gruyter Online (33)
ASTM Compass (30)
Research Starters (25)
RISS - DDOD (Digital Dissertations On Demand) (17)
ACM Full-Text Collection (15)
Emerald Insight (12)
APA PsycArticles (11)
Naxos Music Library (11)
CINAHL Plus with Full Text (11)
University Press Scholarship Online (9)
SciELO (8)
Artstor on JSTOR (For institutions outside of the US) (6)
Persée (6)
British Library EThOS (5)
JoVE Journal (4)
TDX (4)
Wiley Online Reference Works (4)
Academic Conferences in China (Wanfang) (3)
ERICdata Higher Education Knowledge (3)
HeinOnline (3)
SveMed+ (3)
Oxford Scholarship Online (2)
Oxford Art Online (2)
SciTech Connect (2)
ClinicalTrials.gov (2)
Cochrane Database of Systematic Reviews (2)
GeoScienceWorld (2)
Oxford Medicine Online (1)
KRpia (1)