id	domain	url
clogic-191886	www.mathinst.hu	www.mathinst.hu/pub/algebraic-logic/contents.html>
clogic-191886	www.wins.uva.nl	http://www.wins.uva.nl
clogic-191886	www.ets.uidaho.edu	http://www.ets.uidaho.edu/mickelsen/toc/hegel\%20logic\%20toc.htm>