Scopus® (122,513)
MEDLINE (60,385)
Science Citation Index Expanded (49,457)
China Online Journals (Wanfang) (19,235)
Academic Search Complete (19,157)
Complementary Index (18,075)
OAIster (10,399)
Directory of Open Access Journals (7,986)
Supplemental Index (7,827)
Springer Nature Journals (5,766)
IEEE Xplore Digital Library (4,588)
Gale Academic OneFile (4,452)
ScienceDirect (3,407)
arXiv (2,963)
MathSciNet via EBSCOhost (2,896)
Journals@OVID (2,197)
SwePub (1,469)
Gale General OneFile (1,307)
Social Sciences Citation Index (987)
eScholarship (839)
Business Source Complete (797)
USPTO Patent Grants (752)
RePEc (584)
JSTOR Journals (461)
De Gruyter Online (289)
J-STAGE (204)
USPTO Patent Applications (179)
Airiti Library eBooks & Journals - 華藝線上圖書館 (174)
Education Source (142)
Korea Citation Index (139)
NASA Technical Reports (124)
Digital Access to Scholarship at Harvard (DASH) (111)
Europeana (93)
ACM Full-Text Collection (91)
BioOne Complete (76)
Academic Conferences in China (Wanfang) (63)
GeoScienceWorld (58)
MLA International Bibliography (41)
Korean Studies Information Service System (39)
SciTech Connect (34)
Arts & Humanities Citation Index (34)
ERIC (31)
DBPIA (31)
Communication & Mass Media Complete (31)
SciELO (30)
CINAHL Plus with Full Text (30)
Regional Business News (30)
Library, Information Science & Technology Abstracts (30)
RISS - DDOD (Digital Dissertations On Demand) (26)
Research Starters (26)
KERIS Theses & Dissertations (25)
British Library EThOS (25)
ASTM Compass (21)
Emerald Insight (16)
ClinicalTrials.gov (16)
ASM Micrograph Database (14)
Wiley Online Reference Works (12)
eArticle (12)
SpringerProtocols (9)
ERICdata Higher Education Knowledge (9)
스콜라(Scholar) (8)
BrillOnline Reference Works (8)
Aerospace Research Central (6)
HeinOnline (5)
JoVE Journal (4)
TDX (4)
Naxos Music Library (3)
GOBI E-books (2)
Persée (2)
Oxford Scholarship Online (2)
Wiley Digital Archives (2)
E-LIS (Eprints in Library & Information Science) (2)
Westlaw UK (1)
OAPEN Library (1)