5003042677
tar (bituminous material) (300012991) 'distinguished from' pitch (tar) (300012949);
changeNote
5003042677
tar (bituminous material) (300012991) 'distinguished from' pitch (tar) (300012949);
description
tar (bituminous material) (300012991) 'distinguished from' pitch (tar) (300012949);
type
relation added
startedAtTime
2011-08-05T14:24:19