Types of materials
- en chemicals (n) ➜
- en construction materials (n) ➜
- en containers packaging (n) ➜
- en materials (n) ➜
- en metals mining (n) ➜
- en paper forest products (n) ➜
Links to other resources
- sw.opencyc.org /2012/05/10/concept/en/Materials_IndustryGroupSP
- sw.opencyc.org /2012/05/10/concept/en/Materials_SectorSP