Scopus® (14,859)
Academic Search Complete (14,302)
Europeana (11,742)
Complementary Index (11,627)
OAIster (7,955)
MEDLINE (7,491)
Supplemental Index (5,953)
Science Citation Index Expanded (5,490)
Gale Academic OneFile (2,887)
Springer Nature Journals (2,733)
JSTOR Journals (2,524)
Arts & Humanities Citation Index (2,284)
Directory of Open Access Journals (2,212)
Gale General OneFile (1,888)
USPTO Patent Grants (1,339)
SciTech Connect (1,055)
ScienceDirect (1,011)
China Online Journals (Wanfang) (999)
Journals@OVID (870)
GeoScienceWorld (862)
Business Source Complete (679)
Social Sciences Citation Index (485)
SwePub (474)
BrillOnline Reference Works (461)
Research Starters (440)
BioOne Complete (419)
J-STAGE (415)
IEEE Xplore Digital Library (363)
ASTM Compass (330)
Regional Business News (317)
ProjectMUSE (299)
arXiv (264)
RePEc (240)
MathSciNet via EBSCOhost (203)
NASA Technical Reports (191)
Korea Citation Index (170)
eScholarship (159)
Education Source (157)
HeinOnline (144)
USPTO Patent Applications (121)
DBPIA (114)
SciELO (110)
Airiti Library eBooks & Journals - 華藝線上圖書館 (105)
KERIS Theses & Dissertations (98)
Korean Studies Information Service System (85)
British Library EThOS (85)
De Gruyter Online (83)
RISS - DDOD (Digital Dissertations On Demand) (55)
MLA International Bibliography (53)
Wiley Online Reference Works (51)
ERIC (34)
Artstor Digital Library - International Edition (31)
Library, Information Science & Technology Abstracts (28)
CINAHL Plus with Full Text (28)
Persée (27)
Naxos Music Library (25)
Accessible Archives (22)
Westlaw UK (22)
SveMed+ (21)
Alexander Street (19)
GOBI E-books (19)
Emerald Insight (17)
Communication & Mass Media Complete (17)
Oxford Scholarship Online (16)
TDX (14)
eArticle (13)
ASM Alloy Center Database (12)
ACM Full-Text Collection (11)
스콜라(Scholar) (10)
Oxford Art Online (10)
APA PsycArticles (8)
Oxford Reference (8)
University Press Scholarship Online (8)
AccessScience (8)
Digital Access to Scholarship at Harvard (DASH) (7)
AccessEngineering (7)
ClinicalTrials.gov (5)
Wiley Digital Archives (3)
Academic Conferences in China (Wanfang) (3)
F1000Research (2)
Canadiana Online (2)
SSOAR – Social Science Open Access Repository (2)
Newswires (1)
Choice Reviews (1)
Britannica Online (1)
BMJ Best Practice US (1)
ASM Failure Analysis Database (1)
JoVE Journal (1)
E-LIS (Eprints in Library & Information Science) (1)
OAPEN Library (1)