Similar to 社会科学国際文献目録

Sci-Hub

J-STAGE

JSTOR

JAIRO

Astrophysics Data System

NACSIS-CAT record ID

Noesis (online journal)

PhilPapers

MathSciNet

MEDLINE

Live Search Academic

LexisNexis

Sciences Po

ChemSpider

Flags of the World (website)

Fussballdaten.de

Glottolog

Google News Archive

Marxists Internet Archive

NASA Space Science Data Coordinated Archive

Structurae

Visual.ly