Similar to ScienceDirect
プラスチック磁石
Plastic magnetBiodiversity Heritage Library
Biodiversity Heritage LibraryBioOne
BioOneBookFi
CINAHL
CINAHLContextual Query Language
Contextual Query LanguageDBLP
DBLPGoogle Scholar
Google ScholarHAL (公開アーカイブ)
HAL (open archive)Internet Speculative Fiction Database
Internet Speculative Fiction DatabaseLibrary Genesis
Library GenesisPubMed
PubMedSemantic Scholar
Semantic ScholarWhat Works Clearinghouse
What Works ClearinghouseWorldCat
WorldCatZbMATH
ZbMATH OpenI-Scover
医中誌Web
Espacenet
Espacenetカルチュラル・ジャパン
Google ブックス
Google BooksCiNii
CiNii▼-1 trendsSci-Hub
Sci-Hub▼-1 trendsJournal@rchive
J-GLOBAL
J-STAGE
J-STAGEJAIRO
JAIRO社会科学国際文献目録
International Bibliography of the Social Sciences