PTSTS
/
iris
/
Login
Register
TriplyDB
Iris Dataset
Browser
Table
SPARQL
Graphs
6
6
Services
1
1
Assets
6
6
Insights
Schema
BETA
Class frequency
Class hierarchy
coal_10.html
coal_10.html
http://www.workerseducation.org/crutch/pamphlets/coal/coal_10.html
American Miners' Association
Link from a Wikipage to an external page
coal_10.html
http://www.workerseducation.org/crutch/pamphlets/coal/coal_10.html