rkd
/
RKD-Knowledge-Graph
/
Login
RKD
RKD-Knowledge-Graph
Browser
Table
SPARQL
Graphs
25
25
Services
2
2
Assets
0
0
Insights
Schema
BETA
Class frequency
Class hierarchy
Q46998896
Q46998896
https://www.wikidata.org/entity/Q46998896
Sijthoff, Gijsbertus Jan
equivalent
Q46998896
https://www.wikidata.org/entity/Q46998896