AFT Portion of Material Perspective (WD/2019/12)

(http://purl.allotrope.org/voc/afo/perspective/WD/2019/12/portion-of-material)
created/issued: 2019-12-01T12:00:00Z
modified: 209-12-05T12:00:00Z

Taxonomy of materials (stuff, matter) under its physical composition perspective and their roles