Scopus® (64,467)
MEDLINE (26,277)
Academic Search Complete (17,176)
Science Citation Index Expanded (14,010)
Complementary Index (13,299)
China Online Journals (Wanfang) (13,076)
OAIster (6,537)
Supplemental Index (6,499)
Directory of Open Access Journals (5,462)
Springer Nature Journals (4,843)
Gale Academic OneFile (3,173)
ScienceDirect (2,225)
IEEE Xplore Digital Library (2,196)
MathSciNet via EBSCOhost (2,089)
arXiv (2,010)
SwePub (1,242)
Journals@OVID (1,194)
Business Source Complete (609)
USPTO Patent Grants (535)
RePEc (512)
eScholarship (381)
Gale General OneFile (377)
Social Sciences Citation Index (338)
JSTOR Journals (303)
Airiti Library eBooks & Journals - 華藝線上圖書館 (153)
Korea Citation Index (133)
De Gruyter Online (112)
NASA Technical Reports (97)
Education Source (89)
BioOne Complete (83)
USPTO Patent Applications (81)
J-STAGE (80)
Digital Access to Scholarship at Harvard (DASH) (79)
ERIC (48)
SciTech Connect (42)
ACM Full-Text Collection (36)
Academic Conferences in China (Wanfang) (28)
SciELO (27)
Regional Business News (25)
ProjectMUSE (23)
Korean Studies Information Service System (21)
Emerald Insight (18)
RISS - DDOD (Digital Dissertations On Demand) (18)
GeoScienceWorld (18)
Library, Information Science & Technology Abstracts (18)
ClinicalTrials.gov (17)
Wiley Online Reference Works (16)
British Library EThOS (16)
Research Starters (13)
Europeana (12)
DBPIA (12)
Communication & Mass Media Complete (12)
BrillOnline Reference Works (10)
Aerospace Research Central (7)
KERIS Theses & Dissertations (7)
JoVE Journal (7)
CINAHL Plus with Full Text (7)
MLA International Bibliography (6)
Oxford Medicine Online (5)
Arts & Humanities Citation Index (5)
HeinOnline (5)
스콜라(Scholar) (5)
ASTM Compass (5)
TDX (4)
Oxford Scholarship Online (4)
eArticle (4)
APA PsycArticles (3)
ERICdata Higher Education Knowledge (3)
OAPEN Library (2)
Cochrane Database of Systematic Reviews (2)
GOBI E-books (2)
European Union Open Data Portal (2)
Naxos Music Library (1)
AccessScience (1)
SveMed+ (1)
AccessEngineering (1)