5003158732
heptagonal (300378916) 'is based on' heptagons (300378913);
changeNote
5003158732
heptagonal (300378916) 'is based on' heptagons (300378913);
description
heptagonal (300378916) 'is based on' heptagons (300378913);
type
relation added
startedAtTime
2012-02-13T16:15:20