This is a placeholder reference for a Topic entity, related to a WorldCat Entity. Over time, these references will be replaced with persistent URIs to VIAF, FAST, WorldCat, and other Linked Data resources.
- rdf:type
- http://schema.org/Topic
- schema:name
- "วิทยาศาสตร์ ประวัติ ศตวรรษที่ 21."
- "Science / History / 21st century."
- "Science History 21st century."